diff options
| author | Wei WANG <wei_wang@realsil.com.cn> | 2013-02-08 15:24:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-14 11:26:35 -0700 |
| commit | 58e0b94e48bc225343102f9debe626359dffab57 (patch) | |
| tree | 5b1d3904ffe0d9b3e1b1279c637be83124d9fecb /include | |
| parent | d233157ab0476cb80e6fb73817a6979597d759e4 (diff) | |
mfd: rtsx: Fix issue that booting OS with SD card inserted
commit c3481955f6c78c8dd99921759306d7469c999ec2 upstream.
Realtek card reader supports both SD and MS card. According to the
settings of rtsx MFD driver, SD host will be probed before MS host.
If we boot/reboot Linux with SD card inserted, the resetting flow of SD
card will succeed, and the following resetting flow of MS is sure to fail.
Then MS upper-level driver will ask rtsx driver to turn power off. This
request leads to the result that the following SD commands fail and SD card
can't be accessed again.
In this commit, Realtek's SD and MS host driver will check whether the card
that upper driver requesting is the one existing in the slot. If not, Realtek's
host driver will refuse the operation to make sure the exlusive accessing
at the same time.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Cc: Tim Gardner <rtg.canonical@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/rtsx_pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 4b117a3f54d4..acf4d3154c59 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -735,6 +735,7 @@ struct rtsx_pcr { unsigned int card_inserted; unsigned int card_removed; + unsigned int card_exist; struct delayed_work carddet_work; struct delayed_work idle_work; @@ -799,6 +800,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card); int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage); unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); |