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| author | Matthias Kaehlcke <mka@chromium.org> | 2019-09-08 12:12:29 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-09-11 16:10:18 +0200 |
| commit | a29b5fcc3d60c2446d8aa3955acebfe2bba95fa6 (patch) | |
| tree | 5ba01e041d19d59169a096ab3b5ab653029817a0 | |
| parent | 1c81d69d4c98aab56c5a7d5a810f84aefdb37e9b (diff) | |
| download | linux-a29b5fcc3d60c2446d8aa3955acebfe2bba95fa6.tar.bz2 | |
mmc: core: Move code to get pending SDIO IRQs to a function
To improve code quality, let's move the code that gets pending SDIO IRQs
from process_sdio_pending_irqs() into a dedicated function.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
[Ulf: Converted function into static]
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/sdio_irq.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 0bcc5e83bd1a..f75043266984 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -27,6 +27,34 @@ #include "core.h" #include "card.h" +static int sdio_get_pending_irqs(struct mmc_host *host, u8 *pending) +{ + struct mmc_card *card = host->card; + int ret; + + WARN_ON(!host->claimed); + + ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, pending); + if (ret) { + pr_debug("%s: error %d reading SDIO_CCCR_INTx\n", + mmc_card_id(card), ret); + return ret; + } + + if (*pending && mmc_card_broken_irq_polling(card) && + !(host->caps & MMC_CAP_SDIO_IRQ)) { + unsigned char dummy; + + /* A fake interrupt could be created when we poll SDIO_CCCR_INTx + * register with a Marvell SD8797 card. A dummy CMD52 read to + * function 0 register 0xff can avoid this. + */ + mmc_io_rw_direct(card, 0, 0, 0xff, 0, &dummy); + } + + return 0; +} + static int process_sdio_pending_irqs(struct mmc_host *host) { struct mmc_card *card = host->card; @@ -49,23 +77,9 @@ static int process_sdio_pending_irqs(struct mmc_host *host) return 1; } - ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, &pending); - if (ret) { - pr_debug("%s: error %d reading SDIO_CCCR_INTx\n", - mmc_card_id(card), ret); + ret = sdio_get_pending_irqs(host, &pending); + if (ret) return ret; - } - - if (pending && mmc_card_broken_irq_polling(card) && - !(host->caps & MMC_CAP_SDIO_IRQ)) { - unsigned char dummy; - - /* A fake interrupt could be created when we poll SDIO_CCCR_INTx - * register with a Marvell SD8797 card. A dummy CMD52 read to - * function 0 register 0xff can avoid this. - */ - mmc_io_rw_direct(card, 0, 0, 0xff, 0, &dummy); - } count = 0; for (i = 1; i <= 7; i++) { |