From: Pierre Ossman <drzeus@drzeus.cx>
Date: Thu, 5 Mar 2009 18:38:38 +0000 (+0100)
Subject: sdio: handle null tuples
X-Git-Tag: firefly_0821_release~14784^2~34
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c8d718f1037950107f13607ff0b696ffe63df76a;p=firefly-linux-kernel-4.4.55.git

sdio: handle null tuples

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
---

diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 6ba93f599281..963f2937c5e3 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -223,6 +223,10 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
 		if (tpl_code == 0xff)
 			break;
 
+		/* null entries have no link field or data */
+		if (tpl_code == 0x00)
+			continue;
+
 		ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
 		if (ret)
 			break;