diff options
| author | Jaehoon Chung <jh80.chung@samsung.com> | 2016-06-29 19:46:16 +0900 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2016-07-12 14:28:47 +0900 |
| commit | ce757b18fb1ef21de2fd446031f4ad2a554dc1fb (patch) | |
| tree | fe8ccd53ca003e52387e02ac56f523cccb08b75f /drivers/mmc/exynos_dw_mmc.c | |
| parent | f565ea59cbc040bae1d5b49912ba93a2f836ba11 (diff) | |
mmc: exynos_dw_mmc: add the error control for checking index
PERIPH_ID_SDMMC4(131) is not continous value with PERIPH_ID_SDMMC0(75).
If there is no 'index' property in fdt, then dev_index should be
assigned to dev_id(Peripheral ID).
At this time, dev_index should be "56". It means Exynos SoC has "56"
numbers of DWMMC IP. To prevent this behavior, it needs to check the
maximum device index.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'drivers/mmc/exynos_dw_mmc.c')
| -rw-r--r-- | drivers/mmc/exynos_dw_mmc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c index 80d17ad7ee..586002370d 100644 --- a/drivers/mmc/exynos_dw_mmc.c +++ b/drivers/mmc/exynos_dw_mmc.c @@ -160,6 +160,11 @@ static int exynos_dwmci_get_config(const void *blob, int node, if (host->dev_index == host->dev_id) host->dev_index = host->dev_id - PERIPH_ID_SDMMC0; + if (host->dev_index > 4) { + printf("DWMMC%d: Can't get the dev index\n", host->dev_index); + return -EINVAL; + } + /* Get the bus width from the device node */ host->buswidth = fdtdec_get_int(blob, node, "samsung,bus-width", 0); if (host->buswidth <= 0) { |