staging: mt7621-mmc: Fix comparison to NULL

Replace comparisons of a variable 'x' to NULL with
either 'x' or '!x'.
Issues found with checkpatch.pl

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 8c32cec..f2955fa 100644 (file)
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -851,8 +851,8 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq)
 #define SND_DAT 0
 #define SND_CMD 1
 
-       BUG_ON(mmc == NULL);
-       BUG_ON(mrq == NULL);
+       BUG_ON(!mmc);
+       BUG_ON(!mrq);
 
        host->error = 0;
 
@@ -946,7 +946,7 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq)
        }
 
 done:
-       if (data != NULL) {
+       if (data) {
                host->data = NULL;
                dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len,
                             mmc_get_dma_dir(data));
@@ -1638,7 +1638,7 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
        }
 
        /* transfer complete interrupt */
-       if (data != NULL) {
+       if (data) {
                if (inten & MSDC_INT_XFER_COMPL) {
                        data->bytes_xfered = host->xfer_size;
                        complete(&host->xfer_done);
@@ -1661,7 +1661,7 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
        }
 
        /* command interrupts */
-       if ((cmd != NULL) && (intsts & cmdsts)) {
+       if (cmd && (intsts & cmdsts)) {
                if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) ||
                        (intsts & MSDC_INT_ACMD19_DONE)) {
                        u32 *rsp = &cmd->resp[0];