linux-kernel - [PATCH] staging: fpga manager: fix array

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Date:	Wed, 10 Dec 2014 20:48:44 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Alan Tull <atull@...nsource.altera.com>
Cc:	kbuild-all@...org, Michal Simek <monstr@...str.eu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: fpga manager: fix array_size.cocci warnings

drivers/staging/fpga/altera.c:368:33-34: WARNING: Use ARRAY_SIZE

 Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element

Semantic patch information:
 This makes an effort to find cases where ARRAY_SIZE can be used such as
 where there is a division of sizeof the array by the sizeof its first
 element or by any indexed element or the element type. It replaces the
 division of the two sizeofs by ARRAY_SIZE.

Generated by: scripts/coccinelle/misc/array_size.cocci

CC: Alan Tull <atull@...nsource.altera.com>
Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---

 altera.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/fpga/altera.c
+++ b/drivers/staging/fpga/altera.c
@@ -365,7 +365,7 @@ static int altera_fpga_cfg_mode_get(stru
 	msel >>= ALTERA_FPGAMGR_STAT_MSEL_SHIFT;
 
 	/* Check that this MSEL setting is supported */
-	if ((msel >= sizeof(cfgmgr_modes)/sizeof(struct cfgmgr_mode)) ||
+	if ((msel >= ARRAY_SIZE(cfgmgr_modes)) ||
 	    !cfgmgr_modes[msel].valid)
 		return -EINVAL;
 
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