linux-kernel - [PATCH 088/190] Revert "mmc_spi: add a status check for spi_sync

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Message-Id: <20210421130105.1226686-89-gregkh@linuxfoundation.org>
Date:   Wed, 21 Apr 2021 14:59:23 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kangjie Lu <kjlu@....edu>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 088/190] Revert "mmc_spi: add a status check for spi_sync_locked"

This reverts commit 611025983b7976df0183390a63a2166411d177f1.

Commits from @umn.edu addresses have been found to be submitted in "bad
faith" to try to test the kernel community's ability to review "known
malicious" changes.  The result of these submissions can be found in a
paper published at the 42nd IEEE Symposium on Security and Privacy
entitled, "Open Source Insecurity: Stealthily Introducing
Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
of Minnesota) and Kangjie Lu (University of Minnesota).

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix.  Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: Kangjie Lu <kjlu@....edu>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/mmc/host/mmc_spi.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 02f4fd26e76a..cc40b050e302 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -800,10 +800,6 @@ 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,
-- 
2.31.1