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| author | Shawn Lin <shawn.lin@rock-chips.com> | 2018-02-24 14:17:23 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-02-27 15:12:25 +0100 |
| commit | 0d84b9e5631d923744767dc6608672df906dd092 (patch) | |
| tree | 7f732b668625b722255a00f1e8da4a20143e7274 /drivers/mmc/host/dw_mmc.h | |
| parent | a4faa4929ed3be15e2d500d2405f992f6dedc8eb (diff) | |
| download | linux-0d84b9e5631d923744767dc6608672df906dd092.tar.bz2 | |
mmc: dw_mmc: Fix out-of-bounds access for slot's caps
Add num_caps field for dw_mci_drv_data to validate the controller
id from DT alias and non-DT ways.
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Fixes: 800d78bfccb3 ("mmc: dw_mmc: add support for implementation specific callbacks")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.h')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index e3124f06a47e..1424bd490dd1 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -543,6 +543,7 @@ struct dw_mci_slot { /** * dw_mci driver data - dw-mshc implementation specific driver data. * @caps: mmc subsystem specified capabilities of the controller(s). + * @num_caps: number of capabilities specified by @caps. * @init: early implementation specific initialization. * @set_ios: handle bus specific extensions. * @parse_dt: parse implementation specific device tree properties. @@ -554,6 +555,7 @@ struct dw_mci_slot { */ struct dw_mci_drv_data { unsigned long *caps; + u32 num_caps; int (*init)(struct dw_mci *host); void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); int (*parse_dt)(struct dw_mci *host); |