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Date: Tue, 7 Jul 2020 12:11:21 -0500
From: "Gustavo A. R. Silva" <gustavoars@...nel.org>
To: Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>
Cc: linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
"Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH] watchdog: Use fallthrough pseudo-keyword
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?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
drivers/watchdog/advantechwdt.c | 2 +-
drivers/watchdog/alim1535_wdt.c | 2 +-
drivers/watchdog/alim7101_wdt.c | 2 +-
drivers/watchdog/ar7_wdt.c | 3 +--
drivers/watchdog/ath79_wdt.c | 2 +-
drivers/watchdog/eurotechwdt.c | 2 +-
drivers/watchdog/f71808e_wdt.c | 4 ++--
drivers/watchdog/gef_wdt.c | 2 +-
drivers/watchdog/geodewdt.c | 2 +-
drivers/watchdog/ib700wdt.c | 2 +-
drivers/watchdog/it8712f_wdt.c | 2 +-
drivers/watchdog/ixp4xx_wdt.c | 2 +-
drivers/watchdog/m54xx_wdt.c | 2 +-
drivers/watchdog/machzwd.c | 2 +-
drivers/watchdog/mv64x60_wdt.c | 2 +-
drivers/watchdog/nv_tco.c | 2 +-
drivers/watchdog/pc87413_wdt.c | 2 +-
drivers/watchdog/pcwd.c | 2 +-
drivers/watchdog/pcwd_pci.c | 2 +-
drivers/watchdog/pcwd_usb.c | 2 +-
drivers/watchdog/rc32434_wdt.c | 2 +-
drivers/watchdog/riowd.c | 2 +-
drivers/watchdog/sa1100_wdt.c | 2 +-
drivers/watchdog/sb_wdog.c | 2 +-
drivers/watchdog/sbc60xxwdt.c | 2 +-
drivers/watchdog/sbc7240_wdt.c | 2 +-
drivers/watchdog/sbc_fitpc2_wdt.c | 2 +-
drivers/watchdog/sc520_wdt.c | 2 +-
drivers/watchdog/sch311x_wdt.c | 2 +-
drivers/watchdog/smsc37b787_wdt.c | 2 +-
drivers/watchdog/w83877f_wdt.c | 2 +-
drivers/watchdog/w83977f_wdt.c | 2 +-
drivers/watchdog/wafer5823wdt.c | 2 +-
drivers/watchdog/watchdog_dev.c | 2 +-
drivers/watchdog/wdt.c | 2 +-
drivers/watchdog/wdt285.c | 2 +-
drivers/watchdog/wdt977.c | 2 +-
drivers/watchdog/wdt_pci.c | 2 +-
38 files changed, 39 insertions(+), 40 deletions(-)
diff --git a/drivers/watchdog/advantechwdt.c b/drivers/watchdog/advantechwdt.c
index 0e4c18a2aa42..554fe85da50e 100644
--- a/drivers/watchdog/advantechwdt.c
+++ b/drivers/watchdog/advantechwdt.c
@@ -177,7 +177,7 @@ static long advwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (advwdt_set_heartbeat(new_timeout))
return -EINVAL;
advwdt_ping();
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/alim1535_wdt.c b/drivers/watchdog/alim1535_wdt.c
index 42338c7d4540..bfb9a91ca1df 100644
--- a/drivers/watchdog/alim1535_wdt.c
+++ b/drivers/watchdog/alim1535_wdt.c
@@ -220,7 +220,7 @@ static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EINVAL;
ali_keepalive();
}
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c
index 5af0358f4390..4ff7f5afb7aa 100644
--- a/drivers/watchdog/alim7101_wdt.c
+++ b/drivers/watchdog/alim7101_wdt.c
@@ -279,7 +279,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
timeout = new_timeout;
wdt_keepalive();
}
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c
index c087027ffd5d..ff37dc91057d 100644
--- a/drivers/watchdog/ar7_wdt.c
+++ b/drivers/watchdog/ar7_wdt.c
@@ -235,8 +235,7 @@ static long ar7_wdt_ioctl(struct file *file,
ar7_wdt_update_margin(new_margin);
ar7_wdt_kick(1);
spin_unlock(&wdt_lock);
- /* Fall through */
-
+ fallthrough;
case WDIOC_GETTIMEOUT:
if (put_user(margin, (int *)arg))
return -EFAULT;
diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c
index d6dff97c280b..0f18f06a21b6 100644
--- a/drivers/watchdog/ath79_wdt.c
+++ b/drivers/watchdog/ath79_wdt.c
@@ -215,8 +215,8 @@ static long ath79_wdt_ioctl(struct file *file, unsigned int cmd,
err = ath79_wdt_set_timeout(t);
if (err)
break;
+ fallthrough;
- /* fallthrough */
case WDIOC_GETTIMEOUT:
err = put_user(timeout, p);
break;
diff --git a/drivers/watchdog/eurotechwdt.c b/drivers/watchdog/eurotechwdt.c
index f5ffa7be066e..2418ebb707bd 100644
--- a/drivers/watchdog/eurotechwdt.c
+++ b/drivers/watchdog/eurotechwdt.c
@@ -286,7 +286,7 @@ static long eurwdt_ioctl(struct file *file,
eurwdt_timeout = time;
eurwdt_set_timeout(time);
spin_unlock(&eurwdt_lock);
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(eurwdt_timeout, p);
diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index a3c44d75d80e..d7a00e678b9a 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -629,7 +629,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
if (new_options & WDIOS_ENABLECARD)
return watchdog_start();
- /* fall through */
+ fallthrough;
case WDIOC_KEEPALIVE:
watchdog_keepalive();
@@ -643,7 +643,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
return -EINVAL;
watchdog_keepalive();
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(watchdog.timeout, uarg.i);
diff --git a/drivers/watchdog/gef_wdt.c b/drivers/watchdog/gef_wdt.c
index f6541d1b65e3..df5406aa7d25 100644
--- a/drivers/watchdog/gef_wdt.c
+++ b/drivers/watchdog/gef_wdt.c
@@ -201,7 +201,7 @@ static long gef_wdt_ioctl(struct file *file, unsigned int cmd,
if (get_user(timeout, (int __user *)argp))
return -EFAULT;
gef_wdt_set_timeout(timeout);
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
if (put_user(gef_wdt_timeout, (int __user *)argp))
diff --git a/drivers/watchdog/geodewdt.c b/drivers/watchdog/geodewdt.c
index 9914a4283cb2..83418924e30a 100644
--- a/drivers/watchdog/geodewdt.c
+++ b/drivers/watchdog/geodewdt.c
@@ -185,7 +185,7 @@ static long geodewdt_ioctl(struct file *file, unsigned int cmd,
if (geodewdt_set_heartbeat(interval))
return -EINVAL;
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
diff --git a/drivers/watchdog/ib700wdt.c b/drivers/watchdog/ib700wdt.c
index 2b65ea9451d1..a0ddedc362fc 100644
--- a/drivers/watchdog/ib700wdt.c
+++ b/drivers/watchdog/ib700wdt.c
@@ -214,7 +214,7 @@ static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (ibwdt_set_heartbeat(new_margin))
return -EINVAL;
ibwdt_ping();
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
diff --git a/drivers/watchdog/it8712f_wdt.c b/drivers/watchdog/it8712f_wdt.c
index 2fed40d14007..9b89d2f09568 100644
--- a/drivers/watchdog/it8712f_wdt.c
+++ b/drivers/watchdog/it8712f_wdt.c
@@ -303,7 +303,7 @@ static long it8712f_wdt_ioctl(struct file *file, unsigned int cmd,
superio_exit();
it8712f_wdt_ping();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
if (put_user(margin, p))
return -EFAULT;
diff --git a/drivers/watchdog/ixp4xx_wdt.c b/drivers/watchdog/ixp4xx_wdt.c
index 09886616fd21..aae29dcfaf11 100644
--- a/drivers/watchdog/ixp4xx_wdt.c
+++ b/drivers/watchdog/ixp4xx_wdt.c
@@ -136,7 +136,7 @@ static long ixp4xx_wdt_ioctl(struct file *file, unsigned int cmd,
heartbeat = time;
wdt_enable();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(heartbeat, (int *)arg);
diff --git a/drivers/watchdog/m54xx_wdt.c b/drivers/watchdog/m54xx_wdt.c
index 60ed6252e5f4..f388a769dbd3 100644
--- a/drivers/watchdog/m54xx_wdt.c
+++ b/drivers/watchdog/m54xx_wdt.c
@@ -155,7 +155,7 @@ static long m54xx_wdt_ioctl(struct file *file, unsigned int cmd,
heartbeat = time;
wdt_enable();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(heartbeat, (int *)arg);
diff --git a/drivers/watchdog/machzwd.c b/drivers/watchdog/machzwd.c
index 80ff94688487..743377c5b173 100644
--- a/drivers/watchdog/machzwd.c
+++ b/drivers/watchdog/machzwd.c
@@ -171,7 +171,7 @@ static inline void zf_set_timer(unsigned short new, unsigned char n)
switch (n) {
case WD1:
zf_writew(COUNTER_1, new);
- /* fall through */
+ fallthrough;
case WD2:
zf_writeb(COUNTER_2, new > 0xff ? 0xff : new);
default:
diff --git a/drivers/watchdog/mv64x60_wdt.c b/drivers/watchdog/mv64x60_wdt.c
index 0bc72dd69b70..894aa63488d3 100644
--- a/drivers/watchdog/mv64x60_wdt.c
+++ b/drivers/watchdog/mv64x60_wdt.c
@@ -222,7 +222,7 @@ static long mv64x60_wdt_ioctl(struct file *file,
if (get_user(timeout, (int __user *)argp))
return -EFAULT;
mv64x60_wdt_set_timeout(timeout);
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
if (put_user(mv64x60_wdt_timeout, (int __user *)argp))
diff --git a/drivers/watchdog/nv_tco.c b/drivers/watchdog/nv_tco.c
index d7a560e348d5..d15ad8583a59 100644
--- a/drivers/watchdog/nv_tco.c
+++ b/drivers/watchdog/nv_tco.c
@@ -250,7 +250,7 @@ static long nv_tco_ioctl(struct file *file, unsigned int cmd,
if (tco_timer_set_heartbeat(new_heartbeat))
return -EINVAL;
tco_timer_keepalive();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
default:
diff --git a/drivers/watchdog/pc87413_wdt.c b/drivers/watchdog/pc87413_wdt.c
index 73fbfc99083b..2d4504302c9e 100644
--- a/drivers/watchdog/pc87413_wdt.c
+++ b/drivers/watchdog/pc87413_wdt.c
@@ -433,7 +433,7 @@ static long pc87413_ioctl(struct file *file, unsigned int cmd,
return -EINVAL;
timeout = new_timeout;
pc87413_refresh();
- /* fall through - and return the new timeout... */
+ fallthrough; /* and return the new timeout */
case WDIOC_GETTIMEOUT:
new_timeout = timeout * 60;
return put_user(new_timeout, uarg.i);
diff --git a/drivers/watchdog/pcwd.c b/drivers/watchdog/pcwd.c
index 7a0587fdc52c..e86fa7f8351d 100644
--- a/drivers/watchdog/pcwd.c
+++ b/drivers/watchdog/pcwd.c
@@ -651,7 +651,7 @@ static long pcwd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EINVAL;
pcwd_keepalive();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, argp);
diff --git a/drivers/watchdog/pcwd_pci.c b/drivers/watchdog/pcwd_pci.c
index 81508a42a90c..54d86fcb1837 100644
--- a/drivers/watchdog/pcwd_pci.c
+++ b/drivers/watchdog/pcwd_pci.c
@@ -542,7 +542,7 @@ static long pcipcwd_ioctl(struct file *file, unsigned int cmd,
pcipcwd_keepalive();
}
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index 2f44af1831d0..79efca47cebb 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -452,7 +452,7 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
usb_pcwd_keepalive(usb_pcwd_device);
}
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
index aee3c2efd565..e74802f3a32e 100644
--- a/drivers/watchdog/rc32434_wdt.c
+++ b/drivers/watchdog/rc32434_wdt.c
@@ -230,7 +230,7 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
if (rc32434_wdt_set(new_timeout))
return -EINVAL;
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return copy_to_user(argp, &timeout, sizeof(int)) ? -EFAULT : 0;
default:
diff --git a/drivers/watchdog/riowd.c b/drivers/watchdog/riowd.c
index 1b9a6dc8f982..7008596a575f 100644
--- a/drivers/watchdog/riowd.c
+++ b/drivers/watchdog/riowd.c
@@ -134,7 +134,7 @@ static long riowd_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return -EINVAL;
riowd_timeout = (new_margin + 59) / 60;
riowd_writereg(p, riowd_timeout, WDTO_INDEX);
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(riowd_timeout * 60, (int __user *)argp);
diff --git a/drivers/watchdog/sa1100_wdt.c b/drivers/watchdog/sa1100_wdt.c
index 9b93be00109f..27846c6bdfb0 100644
--- a/drivers/watchdog/sa1100_wdt.c
+++ b/drivers/watchdog/sa1100_wdt.c
@@ -127,7 +127,7 @@ static long sa1100dog_ioctl(struct file *file, unsigned int cmd,
pre_margin = oscr_freq * time;
writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3);
- /*fall through*/
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(pre_margin / oscr_freq, p);
diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
index da2dad00d473..504be461f992 100644
--- a/drivers/watchdog/sb_wdog.c
+++ b/drivers/watchdog/sb_wdog.c
@@ -202,7 +202,7 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
timeout = time;
sbwdog_set(user_dog, timeout);
sbwdog_pet(user_dog);
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
/*
diff --git a/drivers/watchdog/sbc60xxwdt.c b/drivers/watchdog/sbc60xxwdt.c
index f2cbe6d880a8..a947a63fb44a 100644
--- a/drivers/watchdog/sbc60xxwdt.c
+++ b/drivers/watchdog/sbc60xxwdt.c
@@ -265,7 +265,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
timeout = new_timeout;
wdt_keepalive();
}
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/sbc7240_wdt.c b/drivers/watchdog/sbc7240_wdt.c
index 520b8dd77ed4..d640b26e18a6 100644
--- a/drivers/watchdog/sbc7240_wdt.c
+++ b/drivers/watchdog/sbc7240_wdt.c
@@ -195,7 +195,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (wdt_set_timeout(new_timeout))
return -EINVAL;
}
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, (int __user *)arg);
default:
diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c
index 1b20b33879c4..04483d6453d6 100644
--- a/drivers/watchdog/sbc_fitpc2_wdt.c
+++ b/drivers/watchdog/sbc_fitpc2_wdt.c
@@ -154,7 +154,7 @@ static long fitpc2_wdt_ioctl(struct file *file, unsigned int cmd,
margin = time;
wdt_enable();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(margin, (int *)arg);
diff --git a/drivers/watchdog/sc520_wdt.c b/drivers/watchdog/sc520_wdt.c
index fbe79bcc9297..e66e6b905964 100644
--- a/drivers/watchdog/sc520_wdt.c
+++ b/drivers/watchdog/sc520_wdt.c
@@ -321,7 +321,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
wdt_keepalive();
}
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/sch311x_wdt.c b/drivers/watchdog/sch311x_wdt.c
index 83949a385f62..d8b77fe10eba 100644
--- a/drivers/watchdog/sch311x_wdt.c
+++ b/drivers/watchdog/sch311x_wdt.c
@@ -295,7 +295,7 @@ static long sch311x_wdt_ioctl(struct file *file, unsigned int cmd,
if (sch311x_wdt_set_heartbeat(new_timeout))
return -EINVAL;
sch311x_wdt_keepalive();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/smsc37b787_wdt.c b/drivers/watchdog/smsc37b787_wdt.c
index 43de56acd767..7463df479d11 100644
--- a/drivers/watchdog/smsc37b787_wdt.c
+++ b/drivers/watchdog/smsc37b787_wdt.c
@@ -474,7 +474,7 @@ static long wb_smsc_wdt_ioctl(struct file *file,
return -EINVAL;
timeout = new_timeout;
wb_smsc_wdt_set_timeout(timeout);
- /* fall through - and return the new timeout... */
+ fallthrough; /* and return the new timeout */
case WDIOC_GETTIMEOUT:
new_timeout = timeout;
if (unit == UNIT_MINUTE)
diff --git a/drivers/watchdog/w83877f_wdt.c b/drivers/watchdog/w83877f_wdt.c
index 6b3b667e6f23..5772cc5d3780 100644
--- a/drivers/watchdog/w83877f_wdt.c
+++ b/drivers/watchdog/w83877f_wdt.c
@@ -289,7 +289,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
timeout = new_timeout;
wdt_keepalive();
}
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
diff --git a/drivers/watchdog/w83977f_wdt.c b/drivers/watchdog/w83977f_wdt.c
index 5212e68c6b01..fd64ae77780a 100644
--- a/drivers/watchdog/w83977f_wdt.c
+++ b/drivers/watchdog/w83977f_wdt.c
@@ -422,7 +422,7 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EINVAL;
wdt_keepalive();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, uarg.i);
diff --git a/drivers/watchdog/wafer5823wdt.c b/drivers/watchdog/wafer5823wdt.c
index a6925847f76f..a8a1ed215e1e 100644
--- a/drivers/watchdog/wafer5823wdt.c
+++ b/drivers/watchdog/wafer5823wdt.c
@@ -174,7 +174,7 @@ static long wafwdt_ioctl(struct file *file, unsigned int cmd,
timeout = new_timeout;
wafwdt_stop();
wafwdt_start();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 7e4cd34a8c20..0c9c50f0f5eb 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -776,7 +776,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
err = watchdog_ping(wdd);
if (err < 0)
break;
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
/* timeout == 0 means that we don't know the timeout */
if (wdd->timeout == 0) {
diff --git a/drivers/watchdog/wdt.c b/drivers/watchdog/wdt.c
index f9054cb0f8e2..a9e40b5c633e 100644
--- a/drivers/watchdog/wdt.c
+++ b/drivers/watchdog/wdt.c
@@ -389,7 +389,7 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (wdt_set_heartbeat(new_heartbeat))
return -EINVAL;
wdt_ping();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
default:
diff --git a/drivers/watchdog/wdt285.c b/drivers/watchdog/wdt285.c
index e60993d0767e..110249e5f642 100644
--- a/drivers/watchdog/wdt285.c
+++ b/drivers/watchdog/wdt285.c
@@ -168,7 +168,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
soft_margin = new_margin;
reload = soft_margin * (mem_fclk_21285 / 256);
watchdog_ping();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(soft_margin, int_arg);
break;
diff --git a/drivers/watchdog/wdt977.c b/drivers/watchdog/wdt977.c
index 066a4fb4d75b..c9b8e863f70f 100644
--- a/drivers/watchdog/wdt977.c
+++ b/drivers/watchdog/wdt977.c
@@ -398,7 +398,7 @@ static long wdt977_ioctl(struct file *file, unsigned int cmd,
return -EINVAL;
wdt977_keepalive();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(timeout, uarg.i);
diff --git a/drivers/watchdog/wdt_pci.c b/drivers/watchdog/wdt_pci.c
index e528024faa41..c3254ba5ace6 100644
--- a/drivers/watchdog/wdt_pci.c
+++ b/drivers/watchdog/wdt_pci.c
@@ -426,7 +426,7 @@ static long wdtpci_ioctl(struct file *file, unsigned int cmd,
if (wdtpci_set_heartbeat(new_heartbeat))
return -EINVAL;
wdtpci_ping();
- /* fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
default:
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