commit 6c6cf64b16438eac6da9a90412a82316ad196e7c
author Sylwester Nawrocki <s.nawrocki@samsung.com> Mon Jun 10 18:22:26 2013 +0200
committer Mark Brown <broonielinaro.org> Mon Jun 10 18:04:00 2013 +0100
tree f9d8ef9eeb87dd9fd868ec1ac7f460ae8ee30b26
parent 317ddd256b9c24b0d78fa8018f80f1e495481a10

spi: s3c64xx: Fix pm_runtime_get_sync() return value check

If the device is already in a runtime PM enabled state
pm_runtime_get_sync() will return 1, so a test for negative
value should be used to check for errors.

Without this patch there are seen errors like:

[    8.540000] s3c64xx-spi 13930000.spi: Failed to enable device: 1
[    8.545000] spi_master spi1: failed to prepare transfer hardware

Likely because the driver uses synchronous API to runtime enable
the device and asynchronous one to disable it.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonielinaro.org>
Cc: stable@vger.kernel.org