mmc: sdhci-pxa: Check pdata before using its members

Signed-off-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com> Acked-by: Zhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
mariux64 · Oct 26, 2011 · 329f223 · 329f223
1 parent 7f7e412
commit 329f223
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
@@ -59,7 +59,7 @@ static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
 		 * tune timing of read data/command when crc error happen
 		 * no performance impact
 		 */
-		if (pdata->clk_delay_sel == 1) {
+		if (pdata && pdata->clk_delay_sel == 1) {
 			tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
 
 			tmp &= ~(SDCLK_DELAY_MASK << SDCLK_DELAY_SHIFT);
@@ -71,7 +71,7 @@ static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
 			writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
 		}
 
-		if (pdata->flags & PXA_FLAG_ENABLE_CLOCK_GATING) {
+		if (pdata && (pdata->flags & PXA_FLAG_ENABLE_CLOCK_GATING)) {
 			tmp = readw(host->ioaddr + SD_FIFO_PARAM);
 			tmp &= ~CLK_GATE_SETTING_BITS;
 			writew(tmp, host->ioaddr + SD_FIFO_PARAM);