From: Dan Carpenter Date: Wed, 4 Feb 2009 23:12:20 +0000 (-0800) Subject: sx.c: fix missed unlock_kernel() on error path in sx_fw_ioctl() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=736d54533aedbcbde8cfb2f9ccd542595db4d78d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git sx.c: fix missed unlock_kernel() on error path in sx_fw_ioctl() If we return directly with -EPERM then lock_kernel() is still held. This was found with a code checker (http://repo.or.cz/w/smatch.git/). [akpm@linux-foundation.org: fix another such path - missed func_exit()] Signed-off-by: Dan Carpenter Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/char/sx.c b/drivers/char/sx.c index b60be7b0decf..f146e90404fa 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -1713,8 +1713,8 @@ static long sx_fw_ioctl(struct file *filp, unsigned int cmd, for (i = 0; i < SX_NBOARDS; i++) sx_dprintk(SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); sx_dprintk(SX_DEBUG_FIRMWARE, "\n"); - unlock_kernel(); - return -EIO; + rc = -EIO; + goto out; } switch (cmd) { @@ -1747,7 +1747,8 @@ static long sx_fw_ioctl(struct file *filp, unsigned int cmd, break; case SXIO_DO_RAMTEST: if (sx_initialized) /* Already initialized: better not ramtest the board. */ - return -EPERM; + rc = -EPERM; + break; if (IS_SX_BOARD(board)) { rc = do_memtest(board, 0, 0x7000); if (!rc) @@ -1844,6 +1845,7 @@ static long sx_fw_ioctl(struct file *filp, unsigned int cmd, rc = -ENOTTY; break; } +out: unlock_kernel(); func_exit(); return rc;