From: Michael Buesch <m@bues.ch>

commit 47ec636f7a25aa2549e198c48ecb6b1c25d05456 upstream.

It doesn't make sense to clobber the const driver-side buffer, if a
write-to-device attempt failed. All other SSB variants (PCI, PCMCIA and SoC)
also don't corrupt the buffer on any failure in block_write.
Therefore, remove this memset from the SDIO variant.

Signed-off-by: Michael Büsch <m@bues.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Kalle Valo <redacted>
Link: https://lore.kernel.org/r/20210515210252.318be2ba@wiggum (local)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/ssb/sdio.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/ssb/sdio.c
+++ b/drivers/ssb/sdio.c

@@ -411,7 +411,6 @@ static void ssb_sdio_block_write(struct
 	sdio_claim_host(bus->host_sdio);
 	if (unlikely(ssb_sdio_switch_core(bus, dev))) {
 		error = -EIO;
-		memset((void *)buffer, 0xff, count);
 		goto err_out;
 	}
 	offset |= bus->sdio_sbaddr & 0xffff;