mmc: tmio: remove work-around for unmasked SDIO interrupts

SDIO IRQs got unmasked on sh-mobile while writing to the
CTL_CLK_AND_WAIT_CTL register, because that register at address 0x138
is not implemented on those SoCs and writes to it overwrite the
register at address 0x38: CTL_SDIO_IRQ_MASK. Previous patches
eliminated access to register above 0xff on sh-mobile, so that this
work-around isn't needed anymore.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 2 insertions, 21 deletions

diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 28e14c7a2540..e1aed2555126 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -208,26 +208,14 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock)
 
 static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
 {
-        struct tmio_mmc_data *pdata = host->pdata;
         struct resource *res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
 
-        /*
-         * Testing on sh-mobile showed that SDIO IRQs are unmasked when
-         * CTL_CLK_AND_WAIT_CTL gets written, so we have to disable the
-         * device IRQ here and restore the SDIO IRQ mask before
-         * re-enabling the device IRQ.
-         */
-        if (pdata->flags & TMIO_MMC_SDIO_IRQ)
-                disable_irq(host->irq);
         /* implicit BUG_ON(!res) */
         if (resource_size(res) > 0x100) {
                 sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0000);
                 msleep(10);
         }
-        if (pdata->flags & TMIO_MMC_SDIO_IRQ) {
-                tmio_mmc_enable_sdio_irq(host->mmc, host->sdio_irq_enabled);
-                enable_irq(host->irq);
-        }
+
         sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~0x0100 &
                 sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
         msleep(10);
@@ -235,24 +223,17 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
 
 static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
 {
-        struct tmio_mmc_data *pdata = host->pdata;
         struct resource *res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
 
         sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, 0x0100 |
                 sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
         msleep(10);
-        /* see comment in tmio_mmc_clk_stop above */
-        if (pdata->flags & TMIO_MMC_SDIO_IRQ)
-                disable_irq(host->irq);
+
         /* implicit BUG_ON(!res) */
         if (resource_size(res) > 0x100) {
                 sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100);
                 msleep(10);
         }
-        if (pdata->flags & TMIO_MMC_SDIO_IRQ) {
-                tmio_mmc_enable_sdio_irq(host->mmc, host->sdio_irq_enabled);
-                enable_irq(host->irq);
-        }
 }
 
 static void tmio_mmc_reset(struct tmio_mmc_host *host)