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SDIO. Added forgotten NULL pointer checks. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7695 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
Uladzimir Pylinski 2015-02-19 17:16:15 +00:00
parent 9e2c12eb74
commit d5307c5e08
2 changed files with 10 additions and 5 deletions
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4
os/hal/ports/STM32/LLD/sdc_lld.h
View File

@ -227,8 +227,8 @@ typedef struct {
* procedures (temporal storage for EXT_CSD, etc.).
* @note Buffer must be word aligned and big enough to store 512 bytes.
* @note It is mandatory for MMC bigger than 2GB.
* @note Memory can be freed after @p sdcConnect function call. Do not
* forge to set this pointer to @p NULL after freeing.
* @note Memory can be freed after @p sdcConnect return. Do not
* forget to set this pointer to @p NULL after freeing.
*/
uint8_t *scratchpad;
} SDCConfig;

9
os/hal/src/sdc.c
View File

@ -308,6 +308,10 @@ static bool sdc_detect_bus_clk(SDCDriver *sdcp, sdcbusclk_t *clk) {
*clk = SDC_CLK_25MHz; /* safe default */
/* Use safe default when there is no space for data.*/
if (NULL == scratchpad)
return HAL_SUCCESS;
if (sdc_lld_read_special(sdcp, scratchpad, 64, MMCSD_CMD_SWITCH, cmdarg))
return HAL_FAILED;
@ -623,8 +627,9 @@ bool sdcConnect(SDCDriver *sdcp) {
goto failed;
sdc_lld_set_data_clk(sdcp, clk);
/* Reads extended CSD if needed.*/
if (SDC_MODE_CARDTYPE_MMC == (sdcp->cardmode & SDC_MODE_CARDTYPE_MASK) &&
/* Reads extended CSD if needed and possible.*/
if (NULL != scratchpad &&
SDC_MODE_CARDTYPE_MMC == (sdcp->cardmode & SDC_MODE_CARDTYPE_MASK) &&
mmcsdGetSlice(sdcp->csd, MMCSD_CSD_MMC_CSD_STRUCTURE_SLICE) > 1) {
if(sdc_lld_read_special(sdcp, scratchpad, 512, MMCSD_CMD_SEND_EXT_CSD, 0))
goto failed;