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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-02-04 19:02:53 +0100 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-02-04 19:14:13 +0100 |
| commit | 84d555aa74434392b682fd9eb0fa701c89a046d6 (patch) | |
| tree | bcc0a9bf058757da14054bce61a8cb8b8c9cd873 /target/linux/brcm2708/patches-4.19/950-0327-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch | |
| parent | 953973c2991e8640549a55df7a0574a1abac8644 (diff) | |
| download | upstream-84d555aa74434392b682fd9eb0fa701c89a046d6.tar.gz upstream-84d555aa74434392b682fd9eb0fa701c89a046d6.tar.bz2 upstream-84d555aa74434392b682fd9eb0fa701c89a046d6.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-4.19/950-0327-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0327-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-4.19/950-0327-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch b/target/linux/brcm2708/patches-4.19/950-0327-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch new file mode 100644 index 0000000000..e16e12da3c --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0327-bcm2835-sdhost-Allow-for-sg-entries-that-cross-pages.patch @@ -0,0 +1,32 @@ +From 44db7882be675cdf2d89741af5bbeba41b3e25af Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 13 Mar 2019 14:19:11 +0000 +Subject: [PATCH] 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; + |