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Date: Thu, 10 Aug 2023 11:15:05 +0200
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>,
Marcel Holtmann <marcel@...tmann.org>,
Johan Hedberg <johan.hedberg@...il.com>,
Luiz Augusto von Dentz <luiz.dentz@...il.com>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 31/36] tty: ldops: unify to u8
Some hooks in struct tty_ldisc_ops still reference buffers by 'unsigned
char'. Unify to 'u8' as the rest of the tty layer does.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
Cc: Marcel Holtmann <marcel@...tmann.org>
Cc: Johan Hedberg <johan.hedberg@...il.com>
Cc: Luiz Augusto von Dentz <luiz.dentz@...il.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
drivers/bluetooth/hci_ldisc.c | 6 +++---
drivers/input/serio/serport.c | 4 ++--
drivers/net/ppp/ppp_async.c | 9 ++++-----
drivers/net/ppp/ppp_synctty.c | 7 +++----
drivers/tty/n_gsm.c | 7 +++----
drivers/tty/n_hdlc.c | 6 +++---
drivers/tty/n_null.c | 7 +++----
drivers/tty/n_tty.c | 11 +++++------
include/linux/tty_ldisc.h | 13 ++++++-------
net/nfc/nci/uart.c | 6 +++---
10 files changed, 35 insertions(+), 41 deletions(-)
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 3e11fc06a932..a26367e9fb19 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -807,14 +807,14 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
* We don't provide read/write/poll interface for user space.
*/
static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t nr,
- void **cookie, unsigned long offset)
+ u8 *buf, size_t nr, void **cookie,
+ unsigned long offset)
{
return 0;
}
static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *data, size_t count)
+ const u8 *data, size_t count)
{
return 0;
}
diff --git a/drivers/input/serio/serport.c b/drivers/input/serio/serport.c
index 5ce8d9f10f3e..1db3f30011c4 100644
--- a/drivers/input/serio/serport.c
+++ b/drivers/input/serio/serport.c
@@ -158,8 +158,8 @@ static void serport_ldisc_receive(struct tty_struct *tty, const u8 *cp,
*/
static ssize_t serport_ldisc_read(struct tty_struct * tty, struct file * file,
- unsigned char *kbuf, size_t nr,
- void **cookie, unsigned long offset)
+ u8 *kbuf, size_t nr, void **cookie,
+ unsigned long offset)
{
struct serport *serport = tty->disc_data;
struct serio *serio;
diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index cfd5cb609d99..fbaaa8c102a1 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -257,9 +257,8 @@ static void ppp_asynctty_hangup(struct tty_struct *tty)
* Pppd reads and writes packets via /dev/ppp instead.
*/
static ssize_t
-ppp_asynctty_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t count,
- void **cookie, unsigned long offset)
+ppp_asynctty_read(struct tty_struct *tty, struct file *file, u8 *buf,
+ size_t count, void **cookie, unsigned long offset)
{
return -EAGAIN;
}
@@ -269,8 +268,8 @@ ppp_asynctty_read(struct tty_struct *tty, struct file *file,
* from the ppp generic stuff.
*/
static ssize_t
-ppp_asynctty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t count)
+ppp_asynctty_write(struct tty_struct *tty, struct file *file, const u8 *buf,
+ size_t count)
{
return -EAGAIN;
}
diff --git a/drivers/net/ppp/ppp_synctty.c b/drivers/net/ppp/ppp_synctty.c
index 164c9053f73b..ebcdffdf4f0e 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -255,8 +255,7 @@ static void ppp_sync_hangup(struct tty_struct *tty)
* Pppd reads and writes packets via /dev/ppp instead.
*/
static ssize_t
-ppp_sync_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t count,
+ppp_sync_read(struct tty_struct *tty, struct file *file, u8 *buf, size_t count,
void **cookie, unsigned long offset)
{
return -EAGAIN;
@@ -267,8 +266,8 @@ ppp_sync_read(struct tty_struct *tty, struct file *file,
* from the ppp generic stuff.
*/
static ssize_t
-ppp_sync_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t count)
+ppp_sync_write(struct tty_struct *tty, struct file *file, const u8 *buf,
+ size_t count)
{
return -EAGAIN;
}
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 3e5cc30941a7..42759500b79e 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -3638,9 +3638,8 @@ static void gsmld_write_wakeup(struct tty_struct *tty)
* This code must be sure never to sleep through a hangup.
*/
-static ssize_t gsmld_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t nr,
- void **cookie, unsigned long offset)
+static ssize_t gsmld_read(struct tty_struct *tty, struct file *file, u8 *buf,
+ size_t nr, void **cookie, unsigned long offset)
{
return -EOPNOTSUPP;
}
@@ -3660,7 +3659,7 @@ static ssize_t gsmld_read(struct tty_struct *tty, struct file *file,
*/
static ssize_t gsmld_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr)
+ const u8 *buf, size_t nr)
{
struct gsm_mux *gsm = tty->disc_data;
unsigned long flags;
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index 9be0932d07e0..a670419efe79 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -425,8 +425,8 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const u8 *data,
* Returns the number of bytes returned or error code.
*/
static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
- __u8 *kbuf, size_t nr,
- void **cookie, unsigned long offset)
+ u8 *kbuf, size_t nr, void **cookie,
+ unsigned long offset)
{
struct n_hdlc *n_hdlc = tty->disc_data;
int ret = 0;
@@ -518,7 +518,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
* Returns the number of bytes written (or error code).
*/
static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *data, size_t count)
+ const u8 *data, size_t count)
{
struct n_hdlc *n_hdlc = tty->disc_data;
int error = 0;
diff --git a/drivers/tty/n_null.c b/drivers/tty/n_null.c
index 4a0d8bb2fb4c..5a429d923eb3 100644
--- a/drivers/tty/n_null.c
+++ b/drivers/tty/n_null.c
@@ -10,15 +10,14 @@
* Copyright (C) Intel 2017
*/
-static ssize_t n_null_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t nr,
- void **cookie, unsigned long offset)
+static ssize_t n_null_read(struct tty_struct *tty, struct file *file, u8 *buf,
+ size_t nr, void **cookie, unsigned long offset)
{
return -EOPNOTSUPP;
}
static ssize_t n_null_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr)
+ const u8 *buf, size_t nr)
{
return -EOPNOTSUPP;
}
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 1053b2adb04c..f44f38bb412e 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2128,12 +2128,11 @@ static int job_control(struct tty_struct *tty, struct file *file)
* claims non-exclusive termios_rwsem;
* publishes read_tail
*/
-static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
- unsigned char *kbuf, size_t nr,
- void **cookie, unsigned long offset)
+static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, u8 *kbuf,
+ size_t nr, void **cookie, unsigned long offset)
{
struct n_tty_data *ldata = tty->disc_data;
- unsigned char *kb = kbuf;
+ u8 *kb = kbuf;
DEFINE_WAIT_FUNC(wait, woken_wake_function);
int c;
int minimum, time;
@@ -2332,9 +2331,9 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
*/
static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr)
+ const u8 *buf, size_t nr)
{
- const unsigned char *b = buf;
+ const u8 *b = buf;
DEFINE_WAIT_FUNC(wait, woken_wake_function);
int c;
ssize_t retval = 0;
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index a661d7df5497..af01e89074b2 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -90,8 +90,8 @@ int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
*
* Optional.
*
- * @read: [TTY] ``ssize_t ()(struct tty_struct *tty, struct file *file,
- * unsigned char *buf, size_t nr)``
+ * @read: [TTY] ``ssize_t ()(struct tty_struct *tty, struct file *file, u8 *buf,
+ * size_t nr)``
*
* This function is called when the user requests to read from the @tty.
* The line discipline will return whatever characters it has buffered up
@@ -102,7 +102,7 @@ int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
* Optional: %EIO unless provided. Can sleep.
*
* @write: [TTY] ``ssize_t ()(struct tty_struct *tty, struct file *file,
- * const unsigned char *buf, size_t nr)``
+ * const u8 *buf, size_t nr)``
*
* This function is called when the user requests to write to the @tty.
* The line discipline will deliver the characters to the low-level tty
@@ -238,11 +238,10 @@ struct tty_ldisc_ops {
int (*open)(struct tty_struct *tty);
void (*close)(struct tty_struct *tty);
void (*flush_buffer)(struct tty_struct *tty);
- ssize_t (*read)(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t nr,
- void **cookie, unsigned long offset);
+ ssize_t (*read)(struct tty_struct *tty, struct file *file, u8 *buf,
+ size_t nr, void **cookie, unsigned long offset);
ssize_t (*write)(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr);
+ const u8 *buf, size_t nr);
int (*ioctl)(struct tty_struct *tty, unsigned int cmd,
unsigned long arg);
int (*compat_ioctl)(struct tty_struct *tty, unsigned int cmd,
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index 93775c540287..ed1508a9e093 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -345,14 +345,14 @@ static int nci_uart_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
/* We don't provide read/write/poll interface for user space. */
static ssize_t nci_uart_tty_read(struct tty_struct *tty, struct file *file,
- unsigned char *buf, size_t nr,
- void **cookie, unsigned long offset)
+ u8 *buf, size_t nr, void **cookie,
+ unsigned long offset)
{
return 0;
}
static ssize_t nci_uart_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *data, size_t count)
+ const u8 *data, size_t count)
{
return 0;
}
--
2.41.0
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