[PATCH] mmc: tmio_mmc: do not enable card hotplug interrupts, if unused

[Guennadi Liakhovetski]

If TMIO MMC is used in polling mode, or the card is non-removable, or
card-detection is performed, using an external interrupt, there is no
need to enable controller native card hotplug interrupts.

Signed-off-by: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
---
 drivers/mmc/host/tmio_mmc_pio.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 69b826a..6294c91 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -302,6 +302,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host 
*host, struct mmc_command
 {
        struct mmc_data *data = host->data;
        int c = cmd->opcode;
+       u32 irq_mask = TMIO_MASK_CMD;
 
        /* Command 12 is handled by hardware */
        if (cmd->opcode == 12 && !cmd->arg) {
@@ -337,7 +338,9 @@ static int tmio_mmc_start_command(struct tmio_mmc_host 
*host, struct mmc_command
                        c |= TRANSFER_READ;
        }
 
-       tmio_mmc_enable_mmc_irqs(host, TMIO_MASK_CMD);
+       if (!host->native_hotplug)
+               irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
+       tmio_mmc_enable_mmc_irqs(host, irq_mask);
 
        /* Fire off the command */
        sd_ctrl_write32(host, CTL_ARG_REG, cmd->arg);
@@ -966,6 +969,8 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host 
**host,
                irq_mask |= TMIO_MASK_READOP;
        if (!_host->chan_tx)
                irq_mask |= TMIO_MASK_WRITEOP;
+       if (!_host->native_hotplug)
+               irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
 
        tmio_mmc_enable_mmc_irqs(_host, irq_mask);
 
-- 
1.7.2.5

--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html