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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-05-22 07:46:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-22 19:22:19 -0700 |
| commit | ad258fb918dae8b1ec79a85b4c7f518e4f902869 (patch) | |
| tree | 8cf702adb9c4f01a89c838d781e99a87ccd3747d | |
| parent | 86ca984cef98a499a7c7572376502b745a9ca369 (diff) | |
| download | linux-ad258fb918dae8b1ec79a85b4c7f518e4f902869.tar.bz2 | |
i2c: designware: Fix bogus sda_hold_time due to uninitialized vars
We need to initializes those variables to 0 for platforms that do not
provide ACPI parameters. Otherwise, we set sda_hold_time to random
values, breaking e.g. Galileo and IOT2000 boards.
Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Fixes: 9d6408433019 ("i2c: designware: don't infer timings described by ACPI from clock rate")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 6283b99d2b17..d1263b82d646 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -94,9 +94,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[], static int dw_i2c_acpi_configure(struct platform_device *pdev) { struct dw_i2c_dev *dev = platform_get_drvdata(pdev); + u32 ss_ht = 0, fp_ht = 0, hs_ht = 0, fs_ht = 0; acpi_handle handle = ACPI_HANDLE(&pdev->dev); const struct acpi_device_id *id; - u32 ss_ht, fp_ht, hs_ht, fs_ht; struct acpi_device *adev; const char *uid; |