From: Stefan Wahren <wahrenst@gmx.net>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Eric Anholt <eric@anholt.net>,
Florian Fainelli <f.fainelli@gmail.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Lukas Wunner <lukas@wunner.de>
Cc: linux-mmc@vger.kernel.org, Stefan Wahren <wahrenst@gmx.net>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mmc: bcm2835: Take SWIOTLB memory size limitation into account
Date: Sat, 24 Aug 2019 08:31:04 +0200 [thread overview]
Message-ID: <1566628264-3289-1-git-send-email-wahrenst@gmx.net> (raw)
Make sure the sdhost driver doesn't use requests bigger than SWIOTLB
can handle.
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
drivers/mmc/host/bcm2835.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 7e0d3a4..7ec0d95 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -1314,7 +1314,7 @@ static int bcm2835_add_host(struct bcm2835_host *host)
}
mmc->max_segs = 128;
- mmc->max_req_size = 524288;
+ mmc->max_req_size = min_t(size_t, 524288, dma_max_mapping_size(dev));
mmc->max_seg_size = mmc->max_req_size;
mmc->max_blk_size = 1024;
mmc->max_blk_count = 65535;
--
2.7.4
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next reply other threads:[~2019-08-24 6:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-24 6:31 Stefan Wahren [this message]
2019-08-27 13:49 ` [PATCH] mmc: bcm2835: Take SWIOTLB memory size limitation into account Ulf Hansson
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