From: Kangjie Lu <kjlu@umn.edu>
Date: Mon, 11 Mar 2019 05:53:33 +0000 (-0500)
Subject: mmc_spi: add a status check for spi_sync_locked
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b5128b96309a4c7dd44f15b7ad74a5614f3c520b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

mmc_spi: add a status check for spi_sync_locked

[ Upstream commit 611025983b7976df0183390a63a2166411d177f1 ]

In case spi_sync_locked fails, the fix reports the error and
returns the error code upstream.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 67f6bd24a9d0..ea254d00541f 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -819,6 +819,10 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
 	}
 
 	status = spi_sync_locked(spi, &host->m);
+	if (status < 0) {
+		dev_dbg(&spi->dev, "read error %d\n", status);
+		return status;
+	}
 
 	if (host->dma_dev) {
 		dma_sync_single_for_cpu(host->dma_dev,