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[5.7,326/376] memory: samsung: exynos5422-dmc: Fix tFAW timings alignment

Message ID 20200619141725.764504538@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH June 19, 2020, 2:34 p.m. UTC 
From: Bernard Zhao <bernard@vivo.com>

commit 4bff7214d263b5235263136cb53147a759b3f3ab upstream.

Aligning of tFAW timing with standard was using wrong argument as
minimum acceptable value.  This could lead to wrong timing if provided
timings and clock period do not match the standard.

Fixes: 6e7674c3c6df ("memory: Add DMC driver for Exynos5422")
Cc: <stable@vger.kernel.org>
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/memory/samsung/exynos5422-dmc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -1091,7 +1091,7 @@  static int create_timings_aligned(struct
 	/* power related timings */
 	val = dmc->timings->tFAW / clk_period_ps;
 	val += dmc->timings->tFAW % clk_period_ps ? 1 : 0;
-	val = max(val, dmc->min_tck->tXP);
+	val = max(val, dmc->min_tck->tFAW);
 	reg = &timing_power[0];
 	*reg_timing_power |= TIMING_VAL2REG(reg, val);