diff options
| author | Stephen Warren <swarren@nvidia.com> | 2013-11-26 02:12:47 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-11-26 17:16:31 +0400 |
| commit | 6b8e090ecc3dc977fe2eabf6e50bb3870de9ebac (patch) | |
| tree | 135b6df97750ad18ffec09a30c0d8fc902678a52 /drivers/base/regmap/regmap-mmio.c | |
| parent | 6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff) | |
| download | linux-6b8e090ecc3dc977fe2eabf6e50bb3870de9ebac.tar.xz | |
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.c | 11 |
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; |