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| author | Alexander Shiyan <eagle.alexander923@gmail.com> | 2025-03-07 08:38:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 11:07:07 +0100 |
| commit | 6f14ce3d209f6ae1bbdc787f23af21b43423085d (patch) | |
| tree | ba16569dafa583536072199ef9ad25a17987a829 /drivers/power | |
| parent | ac009b40ace4c6ec00d50cf2be65cda257ffb06e (diff) | |
| download | linux-6f14ce3d209f6ae1bbdc787f23af21b43423085d.tar.gz linux-6f14ce3d209f6ae1bbdc787f23af21b43423085d.tar.bz2 linux-6f14ce3d209f6ae1bbdc787f23af21b43423085d.zip | |
power: reset: at91-reset: Optimize at91_reset()
[ Upstream commit 62d48983f215bf1dd48665913318101fa3414dcf ]
This patch adds a small optimization to the low-level at91_reset()
function, which includes:
- Removes the extra branch, since the following store operations
already have proper condition checks.
- Removes the definition of the clobber register r4, since it is
no longer used in the code.
Fixes: fcd0532fac2a ("power: reset: at91-reset: make at91sam9g45_restart() generic")
Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20250307053809.20245-1-eagle.alexander923@gmail.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/reset/at91-reset.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c index 741e44a017c3..f47346a0f099 100644 --- a/drivers/power/reset/at91-reset.c +++ b/drivers/power/reset/at91-reset.c @@ -128,12 +128,11 @@ static int at91_reset(struct notifier_block *this, unsigned long mode, " str %4, [%0, %6]\n\t" /* Disable SDRAM1 accesses */ "1: tst %1, #0\n\t" - " beq 2f\n\t" " strne %3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" /* Power down SDRAM1 */ " strne %4, [%1, %6]\n\t" /* Reset CPU */ - "2: str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t" + " str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t" " b .\n\t" : @@ -144,7 +143,7 @@ static int at91_reset(struct notifier_block *this, unsigned long mode, "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN), "r" (reset->data->reset_args), "r" (reset->ramc_lpr) - : "r4"); + ); return NOTIFY_DONE; } |