diff options
author | Jason Liu <jason.hui.liu@nxp.com> | 2020-03-08 18:57:18 +0800 |
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committer | Jason Liu <jason.hui.liu@nxp.com> | 2020-03-08 18:57:18 +0800 |
commit | 335d2828a9000fab6f3895f261e3281342f51f5b (patch) | |
tree | 6c7443842b407e98ef110de6683346455b4d0f88 /drivers/mmc/core/sdio.c | |
parent | 1d12f4912e3b630ee81f17e164309d172d8c50b5 (diff) | |
parent | cff670b3eb68257029e2977a6bfeac7d9b829e9a (diff) |
Merge tag 'v5.4.24' into imx_5.4.y
Merge Linux stable release v5.4.24 into imx_5.4.y
* tag 'v5.4.24': (3306 commits)
Linux 5.4.24
blktrace: Protect q->blk_trace with RCU
kvm: nVMX: VMWRITE checks unsupported field before read-only field
...
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Conflicts:
arch/arm/boot/dts/imx6sll-evk.dts
arch/arm/boot/dts/imx7ulp.dtsi
arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
drivers/clk/imx/clk-composite-8m.c
drivers/gpio/gpio-mxc.c
drivers/irqchip/Kconfig
drivers/mmc/host/sdhci-of-esdhc.c
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
drivers/net/can/flexcan.c
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
drivers/net/ethernet/mscc/ocelot.c
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
drivers/net/phy/realtek.c
drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
drivers/perf/fsl_imx8_ddr_perf.c
drivers/tee/optee/shm_pool.c
drivers/usb/cdns3/gadget.c
kernel/sched/cpufreq.c
net/core/xdp.c
sound/soc/fsl/fsl_esai.c
sound/soc/fsl/fsl_sai.c
sound/soc/sof/core.c
sound/soc/sof/imx/Kconfig
sound/soc/sof/loader.c
Diffstat (limited to 'drivers/mmc/core/sdio.c')
-rw-r--r-- | drivers/mmc/core/sdio.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 26cabd53ddc5..ebb387aa5158 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -1048,9 +1048,35 @@ static int mmc_sdio_runtime_resume(struct mmc_host *host) return ret; } +/* + * SDIO HW reset + * + * Returns 0 if the HW reset was executed synchronously, returns 1 if the HW + * reset was asynchronously scheduled, else a negative error code. + */ static int mmc_sdio_hw_reset(struct mmc_host *host) { - mmc_power_cycle(host, host->card->ocr); + struct mmc_card *card = host->card; + + /* + * In case the card is shared among multiple func drivers, reset the + * card through a rescan work. In this way it will be removed and + * re-detected, thus all func drivers becomes informed about it. + */ + if (atomic_read(&card->sdio_funcs_probed) > 1) { + if (mmc_card_removed(card)) + return 1; + host->rescan_entered = 0; + mmc_card_set_removed(card); + _mmc_detect_change(host, 0, false); + return 1; + } + + /* + * A single func driver has been probed, then let's skip the heavy + * hotplug dance above and execute the reset immediately. + */ + mmc_power_cycle(host, card->ocr); return mmc_sdio_reinit_card(host); } |