mmc: core: remove BUG_ONs from sdio

BUG_ONs doesn't help anything except for stop the system from
running. If it occurs, it implies we should deploy proper error
handling for that. So this patch is gonna discard these meaningless
BUG_ONs and deploy error handling if needed.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 91bbbfb29f3f..f1faf9acc007 100644
--- a/drivers/mmc/core/sdio_irq.c
+++ b/drivers/mmc/core/sdio_irq.c
@@ -214,7 +214,9 @@ static int sdio_card_irq_put(struct mmc_card *card)
         struct mmc_host *host = card->host;
 
         WARN_ON(!host->claimed);
-        BUG_ON(host->sdio_irqs < 1);
+
+        if (host->sdio_irqs < 1)
+                return -EINVAL;
 
         if (!--host->sdio_irqs) {
                 if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
@@ -261,8 +263,8 @@ int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler)
         int ret;
         unsigned char reg;
 
-        BUG_ON(!func);
-        BUG_ON(!func->card);
+        if (!func)
+                return -EINVAL;
 
         pr_debug("SDIO: Enabling IRQ for %s...\n", sdio_func_id(func));
 
@@ -304,8 +306,8 @@ int sdio_release_irq(struct sdio_func *func)
         int ret;
         unsigned char reg;
 
-        BUG_ON(!func);
-        BUG_ON(!func->card);
+        if (!func)
+                return -EINVAL;
 
         pr_debug("SDIO: Disabling IRQ for %s...\n", sdio_func_id(func));