diff options
| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-09 19:50:30 +0200 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-27 11:10:01 +0200 |
| commit | 2340c646e6a5da658e114be2f721ff90853588d4 (patch) | |
| tree | df9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch | |
| parent | 81d0da118694feb874f992093063a2852285d194 (diff) | |
| download | upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.gz upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.bz2 upstream-2340c646e6a5da658e114be2f721ff90853588d4.zip | |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch b/target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch new file mode 100644 index 0000000000..5c8e80d089 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0379-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch @@ -0,0 +1,32 @@ +From 5eb927e238d953d7b471d4c81cb6ba0303dad02c Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 13 Mar 2019 14:19:11 +0000 +Subject: [PATCH 379/773] bcm2835-sdhost: Allow for sg entries that cross pages + +The dma_complete handling code calculates a virtual address for a page +then adds an offset, but if the offset is more than a page and HIGHMEM +is in use then the summed address could be in an unmapped (or just +incorrect) page. + +The upstream SDHOST driver allows for this possibility - copy the code +that does so. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + drivers/mmc/host/bcm2835-sdhost.c | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/drivers/mmc/host/bcm2835-sdhost.c ++++ b/drivers/mmc/host/bcm2835-sdhost.c +@@ -543,6 +543,11 @@ static void bcm2835_sdhost_dma_complete( + void *page; + u32 *buf; + ++ if (host->drain_offset & PAGE_MASK) { ++ host->drain_page += host->drain_offset >> PAGE_SHIFT; ++ host->drain_offset &= ~PAGE_MASK; ++ } ++ + page = kmap_atomic(host->drain_page); + buf = page + host->drain_offset; + |