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Date: Fri, 27 Jul 2012 11:25:12 -0700
From: Andres Salomon <dilinger@...ued.net>
To: Toshiaki Yamane <yamanetoshi@...il.com>
Cc: Greg Kroah-Hartman <greg@...ah.com>, Chris Ball <cjb@...top.org>,
Jon Nettleton <jon.nettleton@...il.com>,
Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging/olpc_dcon: fix checkpatch warnings
Looks fine to me, thanks.
Acked-by: Andres Salomon <dilinger@...ued.net>
On Fri, 27 Jul 2012
20:45:52 +0900 Toshiaki Yamane <yamanetoshi@...il.com> wrote:
> fixed some checkpatch warnings.
> (Excluding -WARNING: msleep < 20ms can sleep for up to 20ms-)
>
> $ find drivers/staging/olpc_dcon/ -name
> "*.[ch]"|xargs ./scripts/checkpatch.pl \ -f --terse --nosummary|cut
> -f3- -d":"|sort |uniq -c|sort -n 2 WARNING: msleep < 20ms can sleep
> for up to 20ms; see Documentation/timers/timers-howto.txt 3 WARNING:
> Prefer pr_debug(... to printk(KERN_DEBUG, ... 3 WARNING: Prefer
> pr_warn(... to printk(KERN_WARNING, ... 6 WARNING: Prefer
> pr_info(... to printk(KERN_INFO, ... 19 WARNING: Prefer pr_err(...
> to printk(KERN_ERR, ...
>
> And added pr_fmt.
>
> Signed-off-by: Toshiaki Yamane <yamanetoshi@...il.com>
> ---
> drivers/staging/olpc_dcon/olpc_dcon.c | 53
> ++++++++++++--------------
> drivers/staging/olpc_dcon/olpc_dcon_xo_1.c | 15 ++++---
> drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c | 6 ++- 3 files
> changed, 37 insertions(+), 37 deletions(-)
>
> diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c
> b/drivers/staging/olpc_dcon/olpc_dcon.c index 992275c..280751a 100644
> --- a/drivers/staging/olpc_dcon/olpc_dcon.c
> +++ b/drivers/staging/olpc_dcon/olpc_dcon.c
> @@ -11,6 +11,7 @@
> * License as published by the Free Software Foundation.
> */
>
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>
> #include <linux/kernel.h>
> #include <linux/fb.h>
> @@ -71,18 +72,16 @@ static int dcon_hw_init(struct dcon_priv *dcon,
> int is_init)
> ver = dcon_read(dcon, DCON_REG_ID);
> if ((ver >> 8) != 0xDC) {
> - printk(KERN_ERR "olpc-dcon: DCON ID not 0xDCxx:
> 0x%04x instead.\n",
> - ver);
> + pr_err("DCON ID not 0xDCxx: 0x%04x instead.\n", ver);
> rc = -ENXIO;
> goto err;
> }
>
> if (is_init) {
> - printk(KERN_INFO "olpc-dcon: Discovered DCON
> version %x\n",
> - ver & 0xFF);
> + pr_info("Discovered DCON version %x\n", ver & 0xFF);
> rc = pdata->init(dcon);
> if (rc != 0) {
> - printk(KERN_ERR "olpc-dcon: Unable to
> init.\n");
> + pr_err("Unable to init.\n");
> goto err;
> }
> }
> @@ -136,8 +135,7 @@ power_up:
> x = 1;
> x = olpc_ec_cmd(0x26, (unsigned char *)&x, 1, NULL,
> 0); if (x) {
> - printk(KERN_WARNING "olpc-dcon: unable to
> force dcon to power up: %d!\n",
> - x);
> + pr_warn("unable to force dcon to power up:
> %d!\n", x); return x;
> }
> msleep(10); /* we'll be conservative */
> @@ -150,7 +148,7 @@ power_up:
> x = dcon_read(dcon, DCON_REG_ID);
> }
> if (x < 0) {
> - printk(KERN_ERR "olpc-dcon: unable to stabilize
> dcon's smbus, reasserting power and praying.\n");
> + pr_err("unable to stabilize dcon's smbus,
> reasserting power and praying.\n");
> BUG_ON(olpc_board_at_least(olpc_board(0xc2))); x = 0;
> olpc_ec_cmd(0x26, (unsigned char *)&x, 1, NULL, 0);
> @@ -221,8 +219,7 @@ static void dcon_sleep(struct dcon_priv *dcon,
> bool sleep) x = 0;
> x = olpc_ec_cmd(0x26, (unsigned char *)&x, 1, NULL,
> 0); if (x)
> - printk(KERN_WARNING "olpc-dcon: unable to
> force dcon to power down: %d!\n",
> - x);
> + pr_warn("unable to force dcon to power down:
> %d!\n", x); else
> dcon->asleep = sleep;
> } else {
> @@ -231,8 +228,7 @@ static void dcon_sleep(struct dcon_priv *dcon,
> bool sleep) dcon->disp_mode |= MODE_BL_ENABLE;
> x = dcon_bus_stabilize(dcon, 1);
> if (x)
> - printk(KERN_WARNING "olpc-dcon: unable to
> reinit dcon hardware: %d!\n",
> - x);
> + pr_warn("unable to reinit dcon hardware:
> %d!\n", x); else
> dcon->asleep = sleep;
>
> @@ -303,12 +299,11 @@ static void dcon_source_switch(struct
> work_struct *work)
> switch (source) {
> case DCON_SOURCE_CPU:
> - printk(KERN_INFO "dcon_source_switch to CPU\n");
> + pr_info("dcon_source_switch to CPU\n");
> /* Enable the scanline interrupt bit */
> if (dcon_write(dcon, DCON_REG_MODE,
> dcon->disp_mode | MODE_SCAN_INT))
> - printk(KERN_ERR
> - "olpc-dcon: couldn't enable scanline
> interrupt!\n");
> + pr_err("couldn't enable scanline
> interrupt!\n"); else {
> /* Wait up to one second for the scanline
> interrupt */ wait_event_timeout(dcon_wait_queue,
> @@ -316,11 +311,11 @@ static void dcon_source_switch(struct
> work_struct *work) }
>
> if (!dcon->switched)
> - printk(KERN_ERR "olpc-dcon: Timeout
> entering CPU mode; expect a screen glitch.\n");
> + pr_err("Timeout entering CPU mode; expect a
> screen glitch.\n");
> /* Turn off the scanline interrupt */
> if (dcon_write(dcon, DCON_REG_MODE, dcon->disp_mode))
> - printk(KERN_ERR "olpc-dcon: couldn't
> disable scanline interrupt!\n");
> + pr_err("couldn't disable scanline
> interrupt!\n");
> /*
> * Ideally we'd like to disable interrupts here so
> that the @@ -331,7 +326,7 @@ static void dcon_source_switch(struct
> work_struct *work)
> * For now, we just hope..
> */
> if (!dcon_blank_fb(dcon, false)) {
> - printk(KERN_ERR "olpc-dcon: Failed to enter
> CPU mode\n");
> + pr_err("Failed to enter CPU mode\n");
> dcon->pending_src = DCON_SOURCE_DCON;
> return;
> }
> @@ -340,14 +335,14 @@ static void dcon_source_switch(struct
> work_struct *work) pdata->set_dconload(1);
> getnstimeofday(&dcon->load_time);
>
> - printk(KERN_INFO "olpc-dcon: The CPU has control\n");
> + pr_info("The CPU has control\n");
> break;
> case DCON_SOURCE_DCON:
> {
> int t;
> struct timespec delta_t;
>
> - printk(KERN_INFO "dcon_source_switch to DCON\n");
> + pr_info("dcon_source_switch to DCON\n");
>
> add_wait_queue(&dcon_wait_queue, &wait);
> set_current_state(TASK_UNINTERRUPTIBLE);
> @@ -361,7 +356,7 @@ static void dcon_source_switch(struct work_struct
> *work) set_current_state(TASK_RUNNING);
>
> if (!dcon->switched) {
> - printk(KERN_ERR "olpc-dcon: Timeout entering
> DCON mode; expect a screen glitch.\n");
> + pr_err("Timeout entering DCON mode; expect a
> screen glitch.\n"); } else {
> /* sometimes the DCON doesn't follow its own
> rules,
> * and doesn't wait for two vsync pulses
> before @@ -377,7 +372,7 @@ static void dcon_source_switch(struct
> work_struct *work) delta_t = timespec_sub(dcon->irq_time,
> dcon->load_time); if (dcon->switched && delta_t.tv_sec == 0 &&
> delta_t.tv_nsec <
> NSEC_PER_MSEC * 20) {
> - printk(KERN_ERR "olpc-dcon: missed
> loading, retrying\n");
> + pr_err("missed loading, retrying\n");
> pdata->set_dconload(1);
> mdelay(41);
> pdata->set_dconload(0);
> @@ -387,7 +382,7 @@ static void dcon_source_switch(struct work_struct
> *work) }
>
> dcon_blank_fb(dcon, true);
> - printk(KERN_INFO "olpc-dcon: The DCON has
> control\n");
> + pr_info("The DCON has control\n");
> break;
> }
> default:
> @@ -475,7 +470,7 @@ static ssize_t dcon_freeze_store(struct device
> *dev, if (ret)
> return ret;
>
> - printk(KERN_INFO "dcon_freeze_store: %lu\n", output);
> + pr_info("dcon_freeze_store: %lu\n", output);
>
> switch (output) {
> case 0:
> @@ -649,7 +644,7 @@ static int dcon_probe(struct i2c_client *client,
> const struct i2c_device_id *id) dcon_device =
> platform_device_alloc("dcon", -1);
> if (dcon_device == NULL) {
> - printk(KERN_ERR "dcon: Unable to create the DCON
> device\n");
> + pr_err("Unable to create the DCON device\n");
> rc = -ENOMEM;
> goto eirq;
> }
> @@ -657,7 +652,7 @@ static int dcon_probe(struct i2c_client *client,
> const struct i2c_device_id *id) platform_set_drvdata(dcon_device,
> dcon);
> if (rc) {
> - printk(KERN_ERR "dcon: Unable to add the DCON
> device\n");
> + pr_err("Unable to add the DCON device\n");
> goto edev;
> }
>
> @@ -761,7 +756,7 @@ irqreturn_t dcon_interrupt(int irq, void *id)
>
> switch (status & 3) {
> case 3:
> - printk(KERN_DEBUG "olpc-dcon: DCONLOAD_MISSED
> interrupt\n");
> + pr_debug("DCONLOAD_MISSED interrupt\n");
> break;
>
> case 2: /* switch to DCON mode */
> @@ -783,9 +778,9 @@ irqreturn_t dcon_interrupt(int irq, void *id)
> dcon->switched = true;
> getnstimeofday(&dcon->irq_time);
> wake_up(&dcon_wait_queue);
> - printk(KERN_DEBUG "olpc-dcon: switching w/
> status 0/0\n");
> + pr_debug("switching w/ status 0/0\n");
> } else {
> - printk(KERN_DEBUG "olpc-dcon: scanline
> interrupt w/CPU\n");
> + pr_debug("scanline interrupt w/CPU\n");
> }
> }
>
> diff --git a/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
> b/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c index c87fdfa..77e8eb5
> 100644 --- a/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
> +++ b/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
> @@ -10,6 +10,9 @@
> * modify it under the terms of version 2 of the GNU General Public
> * License as published by the Free Software Foundation.
> */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
> #include <linux/cs5535.h>
> #include <linux/gpio.h>
> #include <linux/delay.h>
> @@ -22,23 +25,23 @@ static int dcon_init_xo_1(struct dcon_priv *dcon)
> unsigned char lob;
>
> if (gpio_request(OLPC_GPIO_DCON_STAT0, "OLPC-DCON")) {
> - printk(KERN_ERR "olpc-dcon: failed to request STAT0
> GPIO\n");
> + pr_err("failed to request STAT0 GPIO\n");
> return -EIO;
> }
> if (gpio_request(OLPC_GPIO_DCON_STAT1, "OLPC-DCON")) {
> - printk(KERN_ERR "olpc-dcon: failed to request STAT1
> GPIO\n");
> + pr_err("failed to request STAT1 GPIO\n");
> goto err_gp_stat1;
> }
> if (gpio_request(OLPC_GPIO_DCON_IRQ, "OLPC-DCON")) {
> - printk(KERN_ERR "olpc-dcon: failed to request IRQ
> GPIO\n");
> + pr_err("failed to request IRQ GPIO\n");
> goto err_gp_irq;
> }
> if (gpio_request(OLPC_GPIO_DCON_LOAD, "OLPC-DCON")) {
> - printk(KERN_ERR "olpc-dcon: failed to request LOAD
> GPIO\n");
> + pr_err("failed to request LOAD GPIO\n");
> goto err_gp_load;
> }
> if (gpio_request(OLPC_GPIO_DCON_BLANK, "OLPC-DCON")) {
> - printk(KERN_ERR "olpc-dcon: failed to request BLANK
> GPIO\n");
> + pr_err("failed to request BLANK GPIO\n");
> goto err_gp_blank;
> }
>
> @@ -83,7 +86,7 @@ static int dcon_init_xo_1(struct dcon_priv *dcon)
>
> /* Register the interrupt handler */
> if (request_irq(DCON_IRQ, &dcon_interrupt, 0, "DCON", dcon))
> {
> - printk(KERN_ERR "olpc-dcon: failed to request DCON's
> irq\n");
> + pr_err("failed to request DCON's irq\n");
> goto err_req_irq;
> }
>
> diff --git a/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c
> b/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c index 69415ee..352dd3d
> 100644 --- a/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c
> +++ b/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c
> @@ -6,6 +6,8 @@
> * License as published by the Free Software Foundation.
> */
>
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
> #include <linux/acpi.h>
> #include <linux/delay.h>
> #include <linux/pci.h>
> @@ -66,7 +68,7 @@ static int dcon_init_xo_1_5(struct dcon_priv *dcon)
> pdev = pci_get_device(PCI_VENDOR_ID_VIA,
> PCI_DEVICE_ID_VIA_VX855, NULL);
> if (!pdev) {
> - printk(KERN_ERR "cannot find VX855 PCI ID\n");
> + pr_err("cannot find VX855 PCI ID\n");
> return 1;
> }
>
> @@ -104,7 +106,7 @@ static int dcon_init_xo_1_5(struct dcon_priv
> *dcon) /* we're sharing the IRQ with ACPI */
> irq = acpi_gbl_FADT.sci_interrupt;
> if (request_irq(irq, &dcon_interrupt, IRQF_SHARED, "DCON",
> dcon)) {
> - printk(KERN_ERR PREFIX "DCON (IRQ%d) allocation
> failed\n", irq);
> + pr_err("DCON (IRQ%d) allocation failed\n", irq);
> return 1;
> }
>
--
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