3.16.63-rc1 review patch. If anyone has any objections, please let me know.
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From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
commit a0741ba40a009f97c019ae7541dc61c1fdf41efb upstream.
During a re-initialization of the eMMC card, we may fail to re-enable HPI.
In these cases, that isn't properly reflected in the card->ext_csd.hpi_en
bit, as it keeps being set. This may cause following attempts to use HPI,
even if's not enabled. Let's fix this!
Fixes: eb0d8f135b67 ("mmc: core: support HPI send command")
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/mmc/core/mmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1418,9 +1418,11 @@ static int mmc_init_card(struct mmc_host
if (err) {
pr_warning("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
+ card->ext_csd.hpi_en = 0;
err = 0;
- } else
+ } else {
card->ext_csd.hpi_en = 1;
+ }
}
/*
