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authorStephen Warren <swarren@nvidia.com>2013-11-25 15:12:47 -0700
committerMark Brown <broonie@linaro.org>2013-11-26 13:16:31 +0000
commit6b8e090ecc3dc977fe2eabf6e50bb3870de9ebac (patch)
tree135b6df97750ad18ffec09a30c0d8fc902678a52 /drivers/base/regmap/regmap-mmio.c
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff)
regmap: use IS_ERR() to check clk_get() results
clk_get() returns an error pointer, or a valid token to pass back to the clock API. Hence, the result must be checked with IS_ERR(), not by comparison against NULL. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/base/regmap/regmap-mmio.c')
-rw-r--r--drivers/base/regmap/regmap-mmio.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index 98745dd77e8c..81f977510775 100644
--- a/drivers/base/regmap/regmap-mmio.c
+++ b/drivers/base/regmap/regmap-mmio.c
@@ -40,7 +40,7 @@ static int regmap_mmio_gather_write(void *context,
BUG_ON(reg_size != 4);
- if (ctx->clk) {
+ if (!IS_ERR(ctx->clk)) {
ret = clk_enable(ctx->clk);
if (ret < 0)
return ret;
@@ -73,7 +73,7 @@ static int regmap_mmio_gather_write(void *context,
offset += ctx->val_bytes;
}
- if (ctx->clk)
+ if (!IS_ERR(ctx->clk))
clk_disable(ctx->clk);
return 0;
@@ -96,7 +96,7 @@ static int regmap_mmio_read(void *context,
BUG_ON(reg_size != 4);
- if (ctx->clk) {
+ if (!IS_ERR(ctx->clk)) {
ret = clk_enable(ctx->clk);
if (ret < 0)
return ret;
@@ -129,7 +129,7 @@ static int regmap_mmio_read(void *context,
offset += ctx->val_bytes;
}
- if (ctx->clk)
+ if (!IS_ERR(ctx->clk))
clk_disable(ctx->clk);
return 0;
@@ -139,7 +139,7 @@ static void regmap_mmio_free_context(void *context)
{
struct regmap_mmio_context *ctx = context;
- if (ctx->clk) {
+ if (!IS_ERR(ctx->clk)) {
clk_unprepare(ctx->clk);
clk_put(ctx->clk);
}
@@ -209,6 +209,7 @@ static struct regmap_mmio_context *regmap_mmio_gen_context(struct device *dev,
ctx->regs = regs;
ctx->val_bytes = config->val_bits / 8;
+ ctx->clk = ERR_PTR(-ENODEV);
if (clk_id == NULL)
return ctx;