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| author | Axel Lin <axel.lin@ingics.com> | 2013-01-10 10:33:06 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-01-10 12:56:57 +0000 |
| commit | eb758de6a00f2c1f5694efc503b94d162db99734 (patch) | |
| tree | 713aa1ab67940f56fafeba72e66cea2a5b3058d6 /drivers/regulator/lp8788-buck.c | |
| parent | b9bb09111a4f5dbf8a0bd7df77ec79d3fdf9e5d2 (diff) | |
| download | lwn-eb758de6a00f2c1f5694efc503b94d162db99734.tar.gz lwn-eb758de6a00f2c1f5694efc503b94d162db99734.zip | |
regulator: lp8788-buck: Silence build warning
This driver use id as array index, thus add bounder checking for id.
This patch fixes below build warning:
drivers/regulator/lp8788-buck.c: In function 'lp8788_buck_probe':
drivers/regulator/lp8788-buck.c:490:8: warning: array subscript is above array bounds [-Warray-bounds]
drivers/regulator/lp8788-buck.c:489:63: warning: array subscript is above array bounds [-Warray-bounds]
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator/lp8788-buck.c')
| -rw-r--r-- | drivers/regulator/lp8788-buck.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index 11619493a5cb..ef845c7ac69f 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -474,7 +474,7 @@ static int lp8788_init_dvs(struct platform_device *pdev, u8 default_dvs_mode[] = { LP8788_BUCK1_DVS_I2C, LP8788_BUCK2_DVS_I2C }; /* no dvs for buck3, 4 */ - if (id == BUCK3 || id == BUCK4) + if (id > BUCK2) return 0; /* no dvs platform data, then dvs will be selected by I2C registers */ @@ -505,6 +505,9 @@ static int lp8788_buck_probe(struct platform_device *pdev) struct regulator_dev *rdev; int ret; + if (id >= LP8788_NUM_BUCKS) + return -EINVAL; + buck = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_buck), GFP_KERNEL); if (!buck) return -ENOMEM; |