Patchwork [1/3] powerpc: Sky CPU: redundant or incorrect tests on unsigned

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Submitter Andrew Morton
Date Aug. 6, 2009, 11 p.m.
Message ID <200908062300.n76N0aFC028838@imap1.linux-foundation.org>
Download mbox | patch
Permalink /patch/30886/
State Not Applicable
Headers show

Comments

Andrew Morton - Aug. 6, 2009, 11 p.m.
From: Roel Kluin <roel.kluin@gmail.com>

count is unsigned and cannot be less than 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Brian Waite <waite@skycomputers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/misc/hdpuftrs/hdpu_cpustate.c |    5 -----
 1 file changed, 5 deletions(-)

Patch

diff -puN drivers/misc/hdpuftrs/hdpu_cpustate.c~powerpc-sky-cpu-redundant-or-incorrect-tests-on-unsigned drivers/misc/hdpuftrs/hdpu_cpustate.c
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c~powerpc-sky-cpu-redundant-or-incorrect-tests-on-unsigned
+++ a/drivers/misc/hdpuftrs/hdpu_cpustate.c
@@ -121,8 +121,6 @@  static ssize_t cpustate_read(struct file
 {
 	unsigned char data;
 
-	if (count < 0)
-		return -EFAULT;
 	if (count == 0)
 		return 0;
 
@@ -137,9 +135,6 @@  static ssize_t cpustate_write(struct fil
 {
 	unsigned char data;
 
-	if (count < 0)
-		return -EFAULT;
-
 	if (count == 0)
 		return 0;