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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-06-05 13:48:01 +0300 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-06-19 13:42:16 +0300 |
| commit | ebf68996de0ab250c5d520eb2291ab65643e9a1e (patch) | |
| tree | 8722f867dab48c998f980d495013a7f36245016e /drivers/gpu/drm/arm | |
| parent | 62ffc39320e6135235c659687324b393d4215300 (diff) | |
| download | linux-ebf68996de0ab250c5d520eb2291ab65643e9a1e.tar.xz | |
arm/komeda: Convert dp_wait_cond() to return an error code.
dp_wait_cond() currently returns the number of retries left over which
is hardly an useful information. Convert to returning -ETIMEDOUT when
the wait times out, or 0 (zero) when condition is met before deadline.
Also convert the users of the function to return the error value.
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm')
| -rw-r--r-- | drivers/gpu/drm/arm/display/include/malidp_utils.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c | 4 |
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/gpu/drm/arm/display/include/malidp_utils.h b/drivers/gpu/drm/arm/display/include/malidp_utils.h index 8cfd91196e15..3bc383d5bf73 100644 --- a/drivers/gpu/drm/arm/display/include/malidp_utils.h +++ b/drivers/gpu/drm/arm/display/include/malidp_utils.h @@ -8,6 +8,7 @@ #define _MALIDP_UTILS_ #include <linux/delay.h> +#include <linux/errno.h> #define has_bit(nr, mask) (BIT(nr) & (mask)) #define has_bits(bits, mask) (((bits) & (mask)) == (bits)) @@ -20,11 +21,9 @@ int num_tries = __tries; \ while (!__cond && (num_tries > 0)) { \ usleep_range(__min_range, __max_range); \ - if (__cond) \ - break; \ num_tries--; \ } \ - num_tries; \ + (__cond) ? 0 : -ETIMEDOUT; \ }) /* the restriction of range is [start, end] */ diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c index 1c914f8ca016..68f27c5cffcd 100644 --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c @@ -280,7 +280,7 @@ static int d71_change_opmode(struct komeda_dev *mdev, int new_mode) ret = dp_wait_cond(((malidp_read32(d71->gcu_addr, BLK_CONTROL) & 0x7) == opmode), 100, 1000, 10000); - return ret > 0 ? 0 : -ETIMEDOUT; + return ret; } static void d71_flush(struct komeda_dev *mdev, @@ -304,7 +304,7 @@ static int d71_reset(struct d71_dev *d71) ret = dp_wait_cond(!(malidp_read32(gcu, BLK_CONTROL) & GCU_CONTROL_SRST), 100, 1000, 10000); - return ret > 0 ? 0 : -ETIMEDOUT; + return ret; } void d71_read_block_header(u32 __iomem *reg, struct block_header *blk) |