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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2022-04-11 21:07:52 +0300
committerWolfram Sang <wsa@kernel.org>2022-04-15 23:30:59 +0200
commitaef80e2fbe3ec6264e935cebfb8fa3367cb1e7b0 (patch)
treef0e322bb82a3dbd90a777e8778c58d4cc05db406
parent993eb48fa199b5f476df8204e652eff63dd19361 (diff)
downloadlinux-aef80e2fbe3ec6264e935cebfb8fa3367cb1e7b0.tar.bz2
i2c: dev: Force case user pointers in compat_i2cdev_ioctl()
Sparse has warned us about wrong address space for user pointers: i2c-dev.c:561:50: warning: incorrect type in initializer (different address spaces) i2c-dev.c:561:50: expected unsigned char [usertype] *buf i2c-dev.c:561:50: got void [noderef] __user * Force cast the pointer to (__u8 *) that is used by I²C core code. Note, this is an additional fix to the previously addressed similar issue in the I2C_RDWR case in the same function. Fixes: 3265a7e6b41b ("i2c: dev: Add __user annotation") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
-rw-r--r--drivers/i2c/i2c-dev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 6fd2b6718b08..ab0adaa130da 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -557,7 +557,7 @@ static long compat_i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned lo
.addr = umsg.addr,
.flags = umsg.flags,
.len = umsg.len,
- .buf = compat_ptr(umsg.buf)
+ .buf = (__force __u8 *)compat_ptr(umsg.buf),
};
}