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| author | Daniel Willmann <daniel@totalueberwachung.de> | 2014-04-19 23:59:18 +0200 |
|---|---|---|
| committer | Chris Ball <chris@printf.net> | 2014-05-12 18:08:22 -0400 |
| commit | 91769986a724f63db52f3c78c79ac84a5b7045bf (patch) | |
| tree | 495ed726068be0d8f43830dee9e4abad579a6993 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | 1acee84b6fcfccb2f3488bfdf23664b47e0c445b (diff) | |
mmc: mxs: fix card detection function for broken card detect
Return -ENOSYS in get_cd if broken-cd is specified in the device tree.
Commit a91fe279ae75 (mmc: mxs: use standard flag for broken card
detection) sets MMC_CAP_NEEDS_POLL when broken-cd is specified. This
driver sets this flag unconditionally as it does not support a card
detect interrupt. Instead, broken-cd means that there is no card detect
signal connected.
The mmc core checks the get_cd function return value to determine if a
card is present. Only for a non-zero return value it will attempt to
initialize the card. So retuning -ENOSYS will allow the card to be
initialized.
For comparison, mmc_gpio_get_cd in slot-gpio.c also returns -ENOSYS if
the card detect GPIO is not valid.
Signed-off-by: Daniel Willmann <daniel@totalueberwachung.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions