In case of CONFIG_DM_MMC, host->priv actually holds (struct udevice *), and not (struct dwmci_exynos_priv_data *). This makes *priv pointer invalid and may lead to Synchronous Abort during its dereference later in exynos_dwmci_board_init(). Fix it by extracting exynos_dwmmc_get_priv() helper from exynos_dwmci_clksel() and using it for getting the private data in exynos_dwmci_board_init()
Fixes: 3537ee879e04 ("mmc: exynos_dw_mmc: support the Driver mode for Exynos") Signed-off-by: Sam Protsenko semen.protsenko@linaro.org --- drivers/mmc/exynos_dw_mmc.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c index 1f69e193f601..8e80bd6a059f 100644 --- a/drivers/mmc/exynos_dw_mmc.c +++ b/drivers/mmc/exynos_dw_mmc.c @@ -42,18 +42,24 @@ struct dwmci_exynos_priv_data { u32 sdr_timing; };
+static struct dwmci_exynos_priv_data *exynos_dwmmc_get_priv( + struct dwmci_host *host) +{ +#ifdef CONFIG_DM_MMC + return container_of(host, struct dwmci_exynos_priv_data, host); +#else + return host->priv; +#endif +} + /* * Function used as callback function to initialise the * CLKSEL register for every mmc channel. */ static int exynos_dwmci_clksel(struct dwmci_host *host) { -#ifdef CONFIG_DM_MMC - struct dwmci_exynos_priv_data *priv = - container_of(host, struct dwmci_exynos_priv_data, host); -#else - struct dwmci_exynos_priv_data *priv = host->priv; -#endif + struct dwmci_exynos_priv_data *priv = exynos_dwmmc_get_priv(host); + dwmci_writel(host, DWMCI_CLKSEL, priv->sdr_timing);
return 0; @@ -83,7 +89,7 @@ unsigned int exynos_dwmci_get_clk(struct dwmci_host *host, uint freq)
static void exynos_dwmci_board_init(struct dwmci_host *host) { - struct dwmci_exynos_priv_data *priv = host->priv; + struct dwmci_exynos_priv_data *priv = exynos_dwmmc_get_priv(host);
if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) { dwmci_writel(host, EMMCP_MPSBEGIN0, 0);