ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 20:51:03 +02:00
Code Issues Packages Projects Releases Wiki Activity

watchdog: sbc_fitpc2_wdt: add __user annotations

Browse Source 
After a change to the put_user() macro on x86, kernel test robot has
started sending me complaints (from sparse) about passing kernel
pointers to put_user(). So add the __user annotations to the various
casts in fitpc2_wdt_ioctl(), and while in here, also make the write
method actually match the prototype of file_operations::write.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Guenter Roeck <inux@roeck-us.net>
Link: https://lore.kernel.org/r/20201025124518.31647-1-linux@rasmusvillemoes.dk
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Rasmus Villemoes
2020-10-25 13:45:18 +01:00
committed by Wim Van Sebroeck
parent 9747f12b5b
commit 347755d2a8
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/watchdog/sbc_fitpc2_wdt.c
View File

@@ -78,7 +78,7 @@ static int fitpc2_wdt_open(struct inode *inode, struct file *file)
return stream_open(inode, file); return stream_open(inode, file);
} }
static ssize_t fitpc2_wdt_write(struct file *file, const char *data, static ssize_t fitpc2_wdt_write(struct file *file, const char __user *data,
size_t len, loff_t *ppos) size_t len, loff_t *ppos)
{ {
size_t i; size_t i;
@@ -125,16 +125,16 @@ static long fitpc2_wdt_ioctl(struct file *file, unsigned int cmd,
switch (cmd) { switch (cmd) {
case WDIOC_GETSUPPORT: case WDIOC_GETSUPPORT:
ret = copy_to_user((struct watchdog_info *)arg, &ident, ret = copy_to_user((struct watchdog_info __user *)arg, &ident,
sizeof(ident)) ? -EFAULT : 0; sizeof(ident)) ? -EFAULT : 0;
break; break;
case WDIOC_GETSTATUS: case WDIOC_GETSTATUS:
ret = put_user(0, (int *)arg); ret = put_user(0, (int __user *)arg);
break; break;
case WDIOC_GETBOOTSTATUS: case WDIOC_GETBOOTSTATUS:
ret = put_user(0, (int *)arg); ret = put_user(0, (int __user *)arg);
break; break;
case WDIOC_KEEPALIVE: case WDIOC_KEEPALIVE:
@@ -143,7 +143,7 @@ static long fitpc2_wdt_ioctl(struct file *file, unsigned int cmd,
break; break;
case WDIOC_SETTIMEOUT: case WDIOC_SETTIMEOUT:
ret = get_user(time, (int *)arg); ret = get_user(time, (int __user *)arg);
if (ret) if (ret)
break; break;
@@ -157,7 +157,7 @@ static long fitpc2_wdt_ioctl(struct file *file, unsigned int cmd,
fallthrough; fallthrough;
case WDIOC_GETTIMEOUT: case WDIOC_GETTIMEOUT:
ret = put_user(margin, (int *)arg); ret = put_user(margin, (int __user *)arg);
break; break;
} }