Re: [PATCH][next] fbdev: Use fallthrough pseudo-keyword
From: Joe Perches <joe@perches.com>
Date: 2020-08-03 19:52:48
Also in:
dri-devel, linux-arm-kernel, linux-omap, lkml
Subsystem:
arc framebuffer driver, framebuffer layer, the rest · Maintainers:
Jaya Kumar, Helge Deller, Linus Torvalds
On Mon, 2020-08-03 at 21:41 +0200, Sam Ravnborg wrote:
On Tue, Jul 07, 2020 at 04:05:39PM -0500, Gustavo A. R. Silva wrote:quoted
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlightúllthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>Thanks. Fixed indent in arcfb.c while applying. Applied to drm-misc-next and it will appear in 5.10
Perhaps better would be to fix all the switch / case brace uses so that it looks more typical kernel style.
quoted
diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c index 6f7838979f0a..ae3d8e8b8d33 100644 --- a/drivers/video/fbdev/arcfb.c +++ b/drivers/video/fbdev/arcfb.c@@ -419,7 +419,7 @@ static int arcfb_ioctl(struct fb_info *info, schedule(); finish_wait(&arcfb_waitq, &wait); } - /* fall through */ + fallthrough; case FBIO_GETCONTROL2: {
--- drivers/video/fbdev/arcfb.c | 52 ++++++++++++++++++++++----------------------- 1 file changed, 25 insertions(+), 27 deletions(-)
diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c
index 6f7838979f0a..4419655e3e58 100644
--- a/drivers/video/fbdev/arcfb.c
+++ b/drivers/video/fbdev/arcfb.c@@ -403,35 +403,33 @@ static int arcfb_ioctl(struct fb_info *info, unsigned long flags; switch (cmd) { - case FBIO_WAITEVENT: - { - DEFINE_WAIT(wait); - /* illegal to wait on arc if no irq will occur */ - if (!par->irq) - return -EINVAL; - - /* wait until the Arc has generated an interrupt - * which will wake us up */ - spin_lock_irqsave(&par->lock, flags); - prepare_to_wait(&arcfb_waitq, &wait, - TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&par->lock, flags); - schedule(); - finish_wait(&arcfb_waitq, &wait); - } - /* fall through */ + case FBIO_WAITEVENT: { + DEFINE_WAIT(wait); + /* illegal to wait on arc if no irq will occur */ + if (!par->irq) + return -EINVAL; - case FBIO_GETCONTROL2: - { - unsigned char ctl2; + /* wait until the Arc has generated an interrupt + * which will wake us up */ + spin_lock_irqsave(&par->lock, flags); + prepare_to_wait(&arcfb_waitq, &wait, TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&par->lock, flags); + schedule(); + finish_wait(&arcfb_waitq, &wait); + fallthrough; + } - ctl2 = ks108_readb_ctl2(info->par); - if (copy_to_user(argp, &ctl2, sizeof(ctl2))) - return -EFAULT; - return 0; - } - default: - return -EINVAL; + case FBIO_GETCONTROL2: { + unsigned char ctl2; + + ctl2 = ks108_readb_ctl2(info->par); + if (copy_to_user(argp, &ctl2, sizeof(ctl2))) + return -EFAULT; + return 0; + } + + default: + return -EINVAL; } }