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Message-ID: <20231206073712.17776-13-jirislaby@kernel.org>
Date: Wed, 6 Dec 2023 08:36:57 +0100
From: "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To: gregkh@...uxfoundation.org
Cc: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
"Jiri Slaby (SUSE)" <jirislaby@...nel.org>,
Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Amit Shah <amit@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
linuxppc-dev@...ts.ozlabs.org, virtualization@...ts.linux.dev,
linux-riscv@...ts.infradead.org
Subject: [PATCH 12/27] tty: hvc: convert to u8 and size_t
Switch character types to u8 and sizes to size_t. To conform to
characters/sizes in the rest of the tty layer.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Nicholas Piggin <npiggin@...il.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: Amit Shah <amit@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: virtualization@...ts.linux.dev
Cc: linux-riscv@...ts.infradead.org
---
arch/powerpc/include/asm/hvconsole.h | 4 ++--
arch/powerpc/include/asm/hvsi.h | 18 ++++++++--------
arch/powerpc/include/asm/opal.h | 8 +++++---
arch/powerpc/platforms/powernv/opal.c | 14 +++++++------
arch/powerpc/platforms/pseries/hvconsole.c | 4 ++--
drivers/char/virtio_console.c | 10 ++++-----
drivers/tty/hvc/hvc_console.h | 4 ++--
drivers/tty/hvc/hvc_dcc.c | 24 +++++++++++-----------
drivers/tty/hvc/hvc_iucv.c | 18 ++++++++--------
drivers/tty/hvc/hvc_opal.c | 5 +++--
drivers/tty/hvc/hvc_riscv_sbi.c | 9 ++++----
drivers/tty/hvc/hvc_rtas.c | 11 +++++-----
drivers/tty/hvc/hvc_udbg.c | 9 ++++----
drivers/tty/hvc/hvc_vio.c | 18 ++++++++--------
drivers/tty/hvc/hvc_xen.c | 23 +++++++++++----------
drivers/tty/hvc/hvsi_lib.c | 20 ++++++++++--------
16 files changed, 107 insertions(+), 92 deletions(-)
diff --git a/arch/powerpc/include/asm/hvconsole.h b/arch/powerpc/include/asm/hvconsole.h
index ccb2034506f0..d841a97010a0 100644
--- a/arch/powerpc/include/asm/hvconsole.h
+++ b/arch/powerpc/include/asm/hvconsole.h
@@ -21,8 +21,8 @@
* Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count'
* parm is included to conform to put_chars() function pointer template
*/
-extern int hvc_get_chars(uint32_t vtermno, char *buf, int count);
-extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count);
+extern ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count);
+extern ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count);
/* Provided by HVC VIO */
void hvc_vio_init_early(void);
diff --git a/arch/powerpc/include/asm/hvsi.h b/arch/powerpc/include/asm/hvsi.h
index 464a7519ed64..9058edcb632b 100644
--- a/arch/powerpc/include/asm/hvsi.h
+++ b/arch/powerpc/include/asm/hvsi.h
@@ -64,7 +64,7 @@ struct hvsi_priv {
unsigned int inbuf_len; /* data in input buffer */
unsigned char inbuf[HVSI_INBUF_SIZE];
unsigned int inbuf_cur; /* Cursor in input buffer */
- unsigned int inbuf_pktlen; /* packet length from cursor */
+ size_t inbuf_pktlen; /* packet length from cursor */
atomic_t seqno; /* packet sequence number */
unsigned int opened:1; /* driver opened */
unsigned int established:1; /* protocol established */
@@ -72,24 +72,26 @@ struct hvsi_priv {
unsigned int mctrl_update:1; /* modem control updated */
unsigned short mctrl; /* modem control */
struct tty_struct *tty; /* tty structure */
- int (*get_chars)(uint32_t termno, char *buf, int count);
- int (*put_chars)(uint32_t termno, const char *buf, int count);
+ ssize_t (*get_chars)(uint32_t termno, u8 *buf, size_t count);
+ ssize_t (*put_chars)(uint32_t termno, const u8 *buf, size_t count);
uint32_t termno;
};
/* hvsi lib functions */
struct hvc_struct;
extern void hvsilib_init(struct hvsi_priv *pv,
- int (*get_chars)(uint32_t termno, char *buf, int count),
- int (*put_chars)(uint32_t termno, const char *buf,
- int count),
+ ssize_t (*get_chars)(uint32_t termno, u8 *buf,
+ size_t count),
+ ssize_t (*put_chars)(uint32_t termno, const u8 *buf,
+ size_t count),
int termno, int is_console);
extern int hvsilib_open(struct hvsi_priv *pv, struct hvc_struct *hp);
extern void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp);
extern int hvsilib_read_mctrl(struct hvsi_priv *pv);
extern int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr);
extern void hvsilib_establish(struct hvsi_priv *pv);
-extern int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count);
-extern int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count);
+extern ssize_t hvsilib_get_chars(struct hvsi_priv *pv, u8 *buf, size_t count);
+extern ssize_t hvsilib_put_chars(struct hvsi_priv *pv, const u8 *buf,
+ size_t count);
#endif /* _HVSI_H */
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index b66b0c615f4f..af304e6cb486 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -313,9 +313,11 @@ extern int early_init_dt_scan_recoverable_ranges(unsigned long node,
const char *uname, int depth, void *data);
void __init opal_configure_cores(void);
-extern int opal_get_chars(uint32_t vtermno, char *buf, int count);
-extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len);
-extern int opal_put_chars_atomic(uint32_t vtermno, const char *buf, int total_len);
+extern ssize_t opal_get_chars(uint32_t vtermno, u8 *buf, size_t count);
+extern ssize_t opal_put_chars(uint32_t vtermno, const u8 *buf,
+ size_t total_len);
+extern ssize_t opal_put_chars_atomic(uint32_t vtermno, const u8 *buf,
+ size_t total_len);
extern int opal_flush_chars(uint32_t vtermno, bool wait);
extern int opal_flush_console(uint32_t vtermno);
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index cdf3838f08d3..45dd77e3ccf6 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -424,7 +424,7 @@ static int __init opal_message_init(struct device_node *opal_node)
return 0;
}
-int opal_get_chars(uint32_t vtermno, char *buf, int count)
+ssize_t opal_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
s64 rc;
__be64 evt, len;
@@ -441,10 +441,11 @@ int opal_get_chars(uint32_t vtermno, char *buf, int count)
return 0;
}
-static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, bool atomic)
+static ssize_t __opal_put_chars(uint32_t vtermno, const u8 *data,
+ size_t total_len, bool atomic)
{
unsigned long flags = 0 /* shut up gcc */;
- int written;
+ ssize_t written;
__be64 olen;
s64 rc;
@@ -484,7 +485,7 @@ static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, b
if (atomic) {
/* Should not happen */
pr_warn("atomic console write returned partial "
- "len=%d written=%d\n", total_len, written);
+ "len=%zu written=%zd\n", total_len, written);
}
if (!written)
written = -EAGAIN;
@@ -497,7 +498,7 @@ static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, b
return written;
}
-int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
+ssize_t opal_put_chars(uint32_t vtermno, const u8 *data, size_t total_len)
{
return __opal_put_chars(vtermno, data, total_len, false);
}
@@ -508,7 +509,8 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
* true at the moment because console space can race with OPAL's console
* writes.
*/
-int opal_put_chars_atomic(uint32_t vtermno, const char *data, int total_len)
+ssize_t opal_put_chars_atomic(uint32_t vtermno, const u8 *data,
+ size_t total_len)
{
return __opal_put_chars(vtermno, data, total_len, true);
}
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index 1ac52963e08b..8803c947998e 100644
--- a/arch/powerpc/platforms/pseries/hvconsole.c
+++ b/arch/powerpc/platforms/pseries/hvconsole.c
@@ -25,7 +25,7 @@
* firmware.
* @count: not used?
*/
-int hvc_get_chars(uint32_t vtermno, char *buf, int count)
+ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
long ret;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(hvc_get_chars);
* firmware. Must be at least 16 bytes, even if count is less than 16.
* @count: Send this number of characters.
*/
-int hvc_put_chars(uint32_t vtermno, const char *buf, int count)
+ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count)
{
unsigned long *lbuf = (unsigned long *) buf;
long ret;
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 8abe599c1c07..035f89f1a251 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -650,7 +650,7 @@ static ssize_t __send_to_port(struct port *port, struct scatterlist *sg,
* Give out the data that's requested from the buffer that we have
* queued up.
*/
-static ssize_t fill_readbuf(struct port *port, char __user *out_buf,
+static ssize_t fill_readbuf(struct port *port, u8 __user *out_buf,
size_t out_count, bool to_user)
{
struct port_buffer *buf;
@@ -669,7 +669,7 @@ static ssize_t fill_readbuf(struct port *port, char __user *out_buf,
if (ret)
return -EFAULT;
} else {
- memcpy((__force char *)out_buf, buf->buf + buf->offset,
+ memcpy((__force u8 *)out_buf, buf->buf + buf->offset,
out_count);
}
@@ -1104,7 +1104,7 @@ static const struct file_operations port_fops = {
* it to finish: inefficient in theory, but in practice
* implementations will do it immediately.
*/
-static int put_chars(u32 vtermno, const char *buf, int count)
+static ssize_t put_chars(u32 vtermno, const u8 *buf, size_t count)
{
struct port *port;
struct scatterlist sg[1];
@@ -1132,7 +1132,7 @@ static int put_chars(u32 vtermno, const char *buf, int count)
* We call out to fill_readbuf that gets us the required data from the
* buffers that are queued up.
*/
-static int get_chars(u32 vtermno, char *buf, int count)
+static ssize_t get_chars(u32 vtermno, u8 *buf, size_t count)
{
struct port *port;
@@ -1143,7 +1143,7 @@ static int get_chars(u32 vtermno, char *buf, int count)
/* If we don't have an input queue yet, we can't get input. */
BUG_ON(!port->in_vq);
- return fill_readbuf(port, (__force char __user *)buf, count, false);
+ return fill_readbuf(port, (__force u8 __user *)buf, count, false);
}
static void resize_console(struct port *port)
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
index 4062f8ad84df..cf4c1af08a7c 100644
--- a/drivers/tty/hvc/hvc_console.h
+++ b/drivers/tty/hvc/hvc_console.h
@@ -52,8 +52,8 @@ struct hvc_struct {
/* implemented by a low level driver */
struct hv_ops {
- int (*get_chars)(uint32_t vtermno, char *buf, int count);
- int (*put_chars)(uint32_t vtermno, const char *buf, int count);
+ ssize_t (*get_chars)(uint32_t vtermno, u8 *buf, size_t count);
+ ssize_t (*put_chars)(uint32_t vtermno, const u8 *buf, size_t count);
int (*flush)(uint32_t vtermno, bool wait);
/* Callbacks for notification. Called in open, close and hangup */
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c
index 1751108cf763..e34505385ff6 100644
--- a/drivers/tty/hvc/hvc_dcc.c
+++ b/drivers/tty/hvc/hvc_dcc.c
@@ -26,10 +26,10 @@
/* Lock to serialize access to DCC fifo */
static DEFINE_SPINLOCK(dcc_lock);
-static DEFINE_KFIFO(inbuf, unsigned char, DCC_INBUF_SIZE);
-static DEFINE_KFIFO(outbuf, unsigned char, DCC_OUTBUF_SIZE);
+static DEFINE_KFIFO(inbuf, u8, DCC_INBUF_SIZE);
+static DEFINE_KFIFO(outbuf, u8, DCC_OUTBUF_SIZE);
-static void dcc_uart_console_putchar(struct uart_port *port, unsigned char ch)
+static void dcc_uart_console_putchar(struct uart_port *port, u8 ch)
{
while (__dcc_getstatus() & DCC_STATUS_TX)
cpu_relax();
@@ -54,9 +54,9 @@ static int __init dcc_early_console_setup(struct earlycon_device *device,
EARLYCON_DECLARE(dcc, dcc_early_console_setup);
-static int hvc_dcc_put_chars(uint32_t vt, const char *buf, int count)
+static ssize_t hvc_dcc_put_chars(uint32_t vt, const u8 *buf, size_t count)
{
- int i;
+ size_t i;
for (i = 0; i < count; i++) {
while (__dcc_getstatus() & DCC_STATUS_TX)
@@ -68,9 +68,9 @@ static int hvc_dcc_put_chars(uint32_t vt, const char *buf, int count)
return count;
}
-static int hvc_dcc_get_chars(uint32_t vt, char *buf, int count)
+static ssize_t hvc_dcc_get_chars(uint32_t vt, u8 *buf, size_t count)
{
- int i;
+ size_t i;
for (i = 0; i < count; ++i)
if (__dcc_getstatus() & DCC_STATUS_RX)
@@ -149,8 +149,8 @@ static DECLARE_WORK(dcc_pwork, dcc_put_work);
*/
static void dcc_get_work(struct work_struct *work)
{
- unsigned char ch;
unsigned long irqflags;
+ u8 ch;
/*
* Read characters from DCC and put them into the input FIFO, as
@@ -172,10 +172,10 @@ static DECLARE_WORK(dcc_gwork, dcc_get_work);
* Write characters directly to the DCC if we're on core 0 and the FIFO
* is empty, or write them to the FIFO if we're not.
*/
-static int hvc_dcc0_put_chars(u32 vt, const char *buf, int count)
+static ssize_t hvc_dcc0_put_chars(u32 vt, const u8 *buf, size_t count)
{
- int len;
unsigned long irqflags;
+ ssize_t len;
if (!IS_ENABLED(CONFIG_HVC_DCC_SERIALIZE_SMP))
return hvc_dcc_put_chars(vt, buf, count);
@@ -211,10 +211,10 @@ static int hvc_dcc0_put_chars(u32 vt, const char *buf, int count)
* Read characters directly from the DCC if we're on core 0 and the FIFO
* is empty, or read them from the FIFO if we're not.
*/
-static int hvc_dcc0_get_chars(u32 vt, char *buf, int count)
+static ssize_t hvc_dcc0_get_chars(u32 vt, u8 *buf, size_t count)
{
- int len;
unsigned long irqflags;
+ ssize_t len;
if (!IS_ENABLED(CONFIG_HVC_DCC_SERIALIZE_SMP))
return hvc_dcc_get_chars(vt, buf, count);
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index 543f35ddf523..fdecc0d63731 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -215,11 +215,11 @@ static void destroy_tty_buffer_list(struct list_head *list)
* If the IUCV path has been severed, then -EPIPE is returned to cause a
* hang up (that is issued by the HVC layer).
*/
-static int hvc_iucv_write(struct hvc_iucv_private *priv,
- char *buf, int count, int *has_more_data)
+static ssize_t hvc_iucv_write(struct hvc_iucv_private *priv,
+ u8 *buf, size_t count, int *has_more_data)
{
struct iucv_tty_buffer *rb;
- int written;
+ ssize_t written;
int rc;
/* immediately return if there is no IUCV connection */
@@ -312,10 +312,10 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv,
* the routine locks the struct hvc_iucv_private->lock to call
* helper functions.
*/
-static int hvc_iucv_get_chars(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_iucv_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno);
- int written;
+ ssize_t written;
int has_more_data;
if (count <= 0)
@@ -352,8 +352,8 @@ static int hvc_iucv_get_chars(uint32_t vtermno, char *buf, int count)
* If an existing IUCV communicaton path has been severed, -EPIPE is returned
* (that can be passed to HVC layer to cause a tty hangup).
*/
-static int hvc_iucv_queue(struct hvc_iucv_private *priv, const char *buf,
- int count)
+static ssize_t hvc_iucv_queue(struct hvc_iucv_private *priv, const u8 *buf,
+ size_t count)
{
size_t len;
@@ -455,12 +455,12 @@ static void hvc_iucv_sndbuf_work(struct work_struct *work)
* Locking: The method gets called under an irqsave() spinlock; and
* locks struct hvc_iucv_private->lock.
*/
-static int hvc_iucv_put_chars(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvc_iucv_put_chars(uint32_t vtermno, const u8 *buf, size_t count)
{
struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno);
int queued;
- if (count <= 0)
+ if (!count)
return 0;
if (!priv)
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 2cdf66e395cc..095c33ad10f8 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -58,7 +58,7 @@ static const struct hv_ops hvc_opal_raw_ops = {
.notifier_hangup = notifier_hangup_irq,
};
-static int hvc_opal_hvsi_get_chars(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_opal_hvsi_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
struct hvc_opal_priv *pv = hvc_opal_privs[vtermno];
@@ -68,7 +68,8 @@ static int hvc_opal_hvsi_get_chars(uint32_t vtermno, char *buf, int count)
return hvsilib_get_chars(&pv->hvsi, buf, count);
}
-static int hvc_opal_hvsi_put_chars(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvc_opal_hvsi_put_chars(uint32_t vtermno, const u8 *buf,
+ size_t count)
{
struct hvc_opal_priv *pv = hvc_opal_privs[vtermno];
diff --git a/drivers/tty/hvc/hvc_riscv_sbi.c b/drivers/tty/hvc/hvc_riscv_sbi.c
index 31f53fa77e4a..a72591279f86 100644
--- a/drivers/tty/hvc/hvc_riscv_sbi.c
+++ b/drivers/tty/hvc/hvc_riscv_sbi.c
@@ -15,9 +15,9 @@
#include "hvc_console.h"
-static int hvc_sbi_tty_put(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvc_sbi_tty_put(uint32_t vtermno, const u8 *buf, size_t count)
{
- int i;
+ size_t i;
for (i = 0; i < count; i++)
sbi_console_putchar(buf[i]);
@@ -25,9 +25,10 @@ static int hvc_sbi_tty_put(uint32_t vtermno, const char *buf, int count)
return i;
}
-static int hvc_sbi_tty_get(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_sbi_tty_get(uint32_t vtermno, u8 *buf, size_t count)
{
- int i, c;
+ size_t i;
+ int c;
for (i = 0; i < count; i++) {
c = sbi_console_getchar();
diff --git a/drivers/tty/hvc/hvc_rtas.c b/drivers/tty/hvc/hvc_rtas.c
index 184d325abeed..a0b90275b37f 100644
--- a/drivers/tty/hvc/hvc_rtas.c
+++ b/drivers/tty/hvc/hvc_rtas.c
@@ -31,10 +31,10 @@ static struct hvc_struct *hvc_rtas_dev;
static int rtascons_put_char_token = RTAS_UNKNOWN_SERVICE;
static int rtascons_get_char_token = RTAS_UNKNOWN_SERVICE;
-static inline int hvc_rtas_write_console(uint32_t vtermno, const char *buf,
- int count)
+static ssize_t hvc_rtas_write_console(uint32_t vtermno, const u8 *buf,
+ size_t count)
{
- int i;
+ size_t i;
for (i = 0; i < count; i++) {
if (rtas_call(rtascons_put_char_token, 1, 1, NULL, buf[i]))
@@ -44,9 +44,10 @@ static inline int hvc_rtas_write_console(uint32_t vtermno, const char *buf,
return i;
}
-static int hvc_rtas_read_console(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_rtas_read_console(uint32_t vtermno, u8 *buf, size_t count)
{
- int i, c;
+ size_t i;
+ int c;
for (i = 0; i < count; i++) {
if (rtas_call(rtascons_get_char_token, 0, 2, &c))
diff --git a/drivers/tty/hvc/hvc_udbg.c b/drivers/tty/hvc/hvc_udbg.c
index ff0dcc56413c..fdc2699b78dc 100644
--- a/drivers/tty/hvc/hvc_udbg.c
+++ b/drivers/tty/hvc/hvc_udbg.c
@@ -19,9 +19,9 @@
static struct hvc_struct *hvc_udbg_dev;
-static int hvc_udbg_put(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvc_udbg_put(uint32_t vtermno, const u8 *buf, size_t count)
{
- int i;
+ size_t i;
for (i = 0; i < count && udbg_putc; i++)
udbg_putc(buf[i]);
@@ -29,9 +29,10 @@ static int hvc_udbg_put(uint32_t vtermno, const char *buf, int count)
return i;
}
-static int hvc_udbg_get(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_udbg_get(uint32_t vtermno, u8 *buf, size_t count)
{
- int i, c;
+ size_t i;
+ int c;
if (!udbg_getc_poll)
return 0;
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index 736b230f5ec0..47930601a26a 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -58,20 +58,20 @@ struct hvterm_priv {
hv_protocol_t proto; /* Raw data or HVSI packets */
struct hvsi_priv hvsi; /* HVSI specific data */
spinlock_t buf_lock;
- char buf[SIZE_VIO_GET_CHARS];
- int left;
- int offset;
+ u8 buf[SIZE_VIO_GET_CHARS];
+ size_t left;
+ size_t offset;
};
static struct hvterm_priv *hvterm_privs[MAX_NR_HVC_CONSOLES];
/* For early boot console */
static struct hvterm_priv hvterm_priv0;
-static int hvterm_raw_get_chars(uint32_t vtermno, char *buf, int count)
+static ssize_t hvterm_raw_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
struct hvterm_priv *pv = hvterm_privs[vtermno];
unsigned long i;
unsigned long flags;
- int got;
+ size_t got;
if (WARN_ON(!pv))
return 0;
@@ -115,7 +115,8 @@ static int hvterm_raw_get_chars(uint32_t vtermno, char *buf, int count)
* you are sending fewer chars.
* @count: number of chars to send.
*/
-static int hvterm_raw_put_chars(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvterm_raw_put_chars(uint32_t vtermno, const u8 *buf,
+ size_t count)
{
struct hvterm_priv *pv = hvterm_privs[vtermno];
@@ -133,7 +134,7 @@ static const struct hv_ops hvterm_raw_ops = {
.notifier_hangup = notifier_hangup_irq,
};
-static int hvterm_hvsi_get_chars(uint32_t vtermno, char *buf, int count)
+static ssize_t hvterm_hvsi_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
struct hvterm_priv *pv = hvterm_privs[vtermno];
@@ -143,7 +144,8 @@ static int hvterm_hvsi_get_chars(uint32_t vtermno, char *buf, int count)
return hvsilib_get_chars(&pv->hvsi, buf, count);
}
-static int hvterm_hvsi_put_chars(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvterm_hvsi_put_chars(uint32_t vtermno, const u8 *buf,
+ size_t count)
{
struct hvterm_priv *pv = hvterm_privs[vtermno];
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 34c01874f45b..0e497501f8e3 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -84,13 +84,13 @@ static inline void notify_daemon(struct xencons_info *cons)
notify_remote_via_evtchn(cons->evtchn);
}
-static int __write_console(struct xencons_info *xencons,
- const char *data, int len)
+static ssize_t __write_console(struct xencons_info *xencons,
+ const u8 *data, size_t len)
{
XENCONS_RING_IDX cons, prod;
struct xencons_interface *intf = xencons->intf;
- int sent = 0;
unsigned long flags;
+ size_t sent = 0;
spin_lock_irqsave(&xencons->ring_lock, flags);
cons = intf->out_cons;
@@ -115,10 +115,11 @@ static int __write_console(struct xencons_info *xencons,
return sent;
}
-static int domU_write_console(uint32_t vtermno, const char *data, int len)
+static ssize_t domU_write_console(uint32_t vtermno, const u8 *data, size_t len)
{
- int ret = len;
struct xencons_info *cons = vtermno_to_xencons(vtermno);
+ size_t ret = len;
+
if (cons == NULL)
return -EINVAL;
@@ -129,7 +130,7 @@ static int domU_write_console(uint32_t vtermno, const char *data, int len)
* kernel is crippled.
*/
while (len) {
- int sent = __write_console(cons, data, len);
+ ssize_t sent = __write_console(cons, data, len);
if (sent < 0)
return sent;
@@ -144,14 +145,14 @@ static int domU_write_console(uint32_t vtermno, const char *data, int len)
return ret;
}
-static int domU_read_console(uint32_t vtermno, char *buf, int len)
+static ssize_t domU_read_console(uint32_t vtermno, u8 *buf, size_t len)
{
struct xencons_interface *intf;
XENCONS_RING_IDX cons, prod;
- int recv = 0;
struct xencons_info *xencons = vtermno_to_xencons(vtermno);
unsigned int eoiflag = 0;
unsigned long flags;
+ size_t recv = 0;
if (xencons == NULL)
return -EINVAL;
@@ -209,7 +210,7 @@ static const struct hv_ops domU_hvc_ops = {
.notifier_hangup = notifier_hangup_irq,
};
-static int dom0_read_console(uint32_t vtermno, char *buf, int len)
+static ssize_t dom0_read_console(uint32_t vtermno, u8 *buf, size_t len)
{
return HYPERVISOR_console_io(CONSOLEIO_read, len, buf);
}
@@ -218,9 +219,9 @@ static int dom0_read_console(uint32_t vtermno, char *buf, int len)
* Either for a dom0 to write to the system console, or a domU with a
* debug version of Xen
*/
-static int dom0_write_console(uint32_t vtermno, const char *str, int len)
+static ssize_t dom0_write_console(uint32_t vtermno, const u8 *str, size_t len)
{
- int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
+ int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (u8 *)str);
if (rc < 0)
return rc;
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index 09289c8154ae..22e1bc4d8a66 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -12,7 +12,7 @@ static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
/* Assumes that always succeeds, works in practice */
- return pv->put_chars(pv->termno, (char *)packet, packet->len);
+ return pv->put_chars(pv->termno, (u8 *)packet, packet->len);
}
static void hvsi_start_handshake(struct hvsi_priv *pv)
@@ -178,9 +178,10 @@ static int hvsi_get_packet(struct hvsi_priv *pv)
return 0;
}
-int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count)
+ssize_t hvsilib_get_chars(struct hvsi_priv *pv, u8 *buf, size_t count)
{
- unsigned int tries, read = 0;
+ unsigned int tries;
+ size_t read = 0;
if (WARN_ON(!pv))
return -ENXIO;
@@ -199,7 +200,7 @@ int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count)
for (tries = 1; count && tries < 2; tries++) {
/* Consume existing data packet */
if (pv->inbuf_pktlen) {
- unsigned int l = min(count, (int)pv->inbuf_pktlen);
+ size_t l = min(count, pv->inbuf_pktlen);
memcpy(&buf[read], &pv->inbuf[pv->inbuf_cur], l);
pv->inbuf_cur += l;
pv->inbuf_pktlen -= l;
@@ -228,10 +229,11 @@ int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count)
return read;
}
-int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count)
+ssize_t hvsilib_put_chars(struct hvsi_priv *pv, const u8 *buf, size_t count)
{
struct hvsi_data dp;
- int rc, adjcount = min(count, HVSI_MAX_OUTGOING_DATA);
+ size_t adjcount = min_t(size_t, count, HVSI_MAX_OUTGOING_DATA);
+ int rc;
if (WARN_ON(!pv))
return -ENODEV;
@@ -411,9 +413,9 @@ void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp)
}
void hvsilib_init(struct hvsi_priv *pv,
- int (*get_chars)(uint32_t termno, char *buf, int count),
- int (*put_chars)(uint32_t termno, const char *buf,
- int count),
+ ssize_t (*get_chars)(uint32_t termno, u8 *buf, size_t count),
+ ssize_t (*put_chars)(uint32_t termno, const u8 *buf,
+ size_t count),
int termno, int is_console)
{
memset(pv, 0, sizeof(*pv));
--
2.43.0
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