diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0687-Limit-max_req_size-under-arm64-or-any-other-platform.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0687-Limit-max_req_size-under-arm64-or-any-other-platform.patch | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0687-Limit-max_req_size-under-arm64-or-any-other-platform.patch b/target/linux/bcm27xx/patches-4.19/950-0687-Limit-max_req_size-under-arm64-or-any-other-platform.patch deleted file mode 100644 index 87b4e9b58a..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0687-Limit-max_req_size-under-arm64-or-any-other-platform.patch +++ /dev/null @@ -1,33 +0,0 @@ -From 7bfcb31431f06efc233e4cc4d7ab65e10a6522cd Mon Sep 17 00:00:00 2001 -From: Yaroslav Rosomakho <yaroslavros@gmail.com> -Date: Fri, 23 Aug 2019 11:02:22 +0200 -Subject: [PATCH] Limit max_req_size under arm64 (or any other platform - that uses swiotlb) to prevent potential buffer overflow due to bouncing. - -Signed-off-by: Yaroslav Rosomakho <yaroslavros@gmail.com> ---- - drivers/mmc/host/bcm2835-mmc.c | 6 +++++- - 1 file changed, 5 insertions(+), 1 deletion(-) - ---- a/drivers/mmc/host/bcm2835-mmc.c -+++ b/drivers/mmc/host/bcm2835-mmc.c -@@ -38,6 +38,7 @@ - #include <linux/dmaengine.h> - #include <linux/dma-mapping.h> - #include <linux/of_dma.h> -+#include <linux/swiotlb.h> - - #include "sdhci.h" - -@@ -1374,7 +1375,10 @@ static int bcm2835_mmc_add_host(struct b - } - #endif - mmc->max_segs = 128; -- mmc->max_req_size = 524288; -+ if (swiotlb_max_segment()) -+ mmc->max_req_size = (1 << IO_TLB_SHIFT) * IO_TLB_SEGSIZE; -+ else -+ mmc->max_req_size = 524288; - mmc->max_seg_size = mmc->max_req_size; - mmc->max_blk_size = 512; - mmc->max_blk_count = 65535; |