5.13-stable patches

added patches:
	mtd-cfi_cmdset_0002-fix-crash-when-erasing-writing-amd-cards.patch

diff --git a/queue-5.13/mtd-cfi_cmdset_0002-fix-crash-when-erasing-writing-amd-cards.patch b/queue-5.13/mtd-cfi_cmdset_0002-fix-crash-when-erasing-writing-amd-cards.patch
new file mode 100644 (file)
index 0000000..fcd1aad
--- /dev/null
+++ b/queue-5.13/mtd-cfi_cmdset_0002-fix-crash-when-erasing-writing-amd-cards.patch
@@ -0,0 +1,34 @@
+From 2394e628738933aa014093d93093030f6232946d Mon Sep 17 00:00:00 2001
+From: Andreas Persson <andreasp56@outlook.com>
+Date: Mon, 12 Jul 2021 09:54:52 +0200
+Subject: mtd: cfi_cmdset_0002: fix crash when erasing/writing AMD cards
+
+From: Andreas Persson <andreasp56@outlook.com>
+
+commit 2394e628738933aa014093d93093030f6232946d upstream.
+
+Erasing an AMD linear flash card (AM29F016D) crashes after the first
+sector has been erased. Likewise, writing to it crashes after two bytes
+have been written. The reason is a missing check for a null pointer -
+the cmdset_priv field is not set for this type of card.
+
+Fixes: 4844ef80305d ("mtd: cfi_cmdset_0002: Add support for polling status register")
+Signed-off-by: Andreas Persson <andreasp56@outlook.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/DB6P189MB05830B3530B8087476C5CFE4C1159@DB6P189MB0583.EURP189.PROD.OUTLOOK.COM
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/mtd/chips/cfi_cmdset_0002.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -119,7 +119,7 @@ static int cfi_use_status_reg(struct cfi
+       struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+       u8 poll_mask = CFI_POLL_STATUS_REG | CFI_POLL_DQ;
+ 
+-      return extp->MinorVersion >= '5' &&
++      return extp && extp->MinorVersion >= '5' &&
+               (extp->SoftwareFeatures & poll_mask) == CFI_POLL_STATUS_REG;
+ }
+ 

diff --git a/queue-5.13/series b/queue-5.13/series
new file mode 100644 (file)
index 0000000..7e41e53
--- /dev/null
+++ b/queue-5.13/series
@@ -0,0 +1 @@
+mtd-cfi_cmdset_0002-fix-crash-when-erasing-writing-amd-cards.patch