linux-kernel - [PATCH 4/7] HID: picoLCD: satify some checkpatch warnings

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Message-ID: <20120730213854.4bb52224@neptune.home>
Date:	Mon, 30 Jul 2012 21:38:54 +0200
From:	Bruno Prémont <bonbons@...ux-vserver.org>
To:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Kosina <jkosina@...e.cz>
Cc:	Jaya Kumar <jayalk@...works.biz>, linux-fbdev@...r.kernel.org
Subject: [PATCH 4/7] HID: picoLCD: satify some checkpatch warnings

WARNING: static const char * array should probably be static const char * const
+static const char *error_codes[] = {

WARNING: min() should probably be min_t(size_t, 20, s)
+       raw_data[2] = min((size_t)20, s);

Note: the second min_t suggestion cannot be followed because GCC is not
smart enough to track constants through it and make
copy_from_user_overflow() check happy.

WARNING: min() should probably be min_t(u8, 20, raw_data[2])
+       if (copy_from_user(raw_data+3, u, min((u8)20, raw_data[2])))
                return -EFAULT;

Signed-off-by: Bruno Prémont <bonbons@...ux-vserver.org>
---
 drivers/hid/hid-picolcd_debugfs.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-picolcd_debugfs.c b/drivers/hid/hid-picolcd_debugfs.c
index ff74645..f2491fa 100644
--- a/drivers/hid/hid-picolcd_debugfs.c
+++ b/drivers/hid/hid-picolcd_debugfs.c
@@ -135,7 +135,7 @@ static ssize_t picolcd_debug_eeprom_write(struct file *f, const char __user *u,
 	memset(raw_data, 0, sizeof(raw_data));
 	raw_data[0] = *off & 0xff;
 	raw_data[1] = (*off >> 8) & 0xff;
-	raw_data[2] = min((size_t)20, s);
+	raw_data[2] = min_t(size_t, 20, s);
 	if (*off + raw_data[2] > 0xff)
 		raw_data[2] = 0x100 - *off;
 
@@ -370,7 +370,7 @@ static const struct file_operations picolcd_debug_flash_fops = {
 /*
  * Helper code for HID report level dumping/debugging
  */
-static const char *error_codes[] = {
+static const char * const error_codes[] = {
 	"success", "parameter missing", "data_missing", "block readonly",
 	"block not erasable", "block too big", "section overflow",
 	"invalid command length", "invalid data length",
-- 
1.7.8.6

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