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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>
This commit is contained in:
Matthias Kaehlcke 2019-09-08 12:12:29 +02:00 committed by Ulf Hansson
parent 1c81d69d4c
commit a29b5fcc3d
1 changed files with 30 additions and 16 deletions
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46
drivers/mmc/core/sdio_irq.c
View File

@ -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++) {