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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2016-09-07 22:50:22 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2016-09-12 19:58:45 +0100 |
| commit | 1423877b73ed5f4982eaba8bed359605b9918a2b (patch) | |
| tree | 19fe399436429fe4b6086f33300e619d1abb648e /drivers/spi/spi-fsl-lib.h | |
| parent | spi: fsl-espi: remove unneeded check in fsl_espi_do_trans (diff) | |
| download | linux-dev-1423877b73ed5f4982eaba8bed359605b9918a2b.tar.xz linux-dev-1423877b73ed5f4982eaba8bed359605b9918a2b.zip | |
spi: fsl-espi: pre-allocate message buffer
Currently the driver allocates a 64kb buffer for each single message.
On systems with little and fragmented memory this can result in
memory allocation errors. Solve this by pre-allocating a buffer.
This patch was developed in OpenWRT long ago, however it never
made it upstream.
I slightly modified the original patch to re-initialize the buffer
at the beginning of each transfer.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsl-lib.h')
| -rw-r--r-- | drivers/spi/spi-fsl-lib.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-lib.h b/drivers/spi/spi-fsl-lib.h index 84f5dcb7a897..065b9db212cf 100644 --- a/drivers/spi/spi-fsl-lib.h +++ b/drivers/spi/spi-fsl-lib.h @@ -30,6 +30,7 @@ struct mpc8xxx_spi { void *rx; #if IS_ENABLED(CONFIG_SPI_FSL_ESPI) int len; + u8 *local_buf; #endif int subblock; |