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spi: dw: Fix checkpatch issue 

Fix the following checkpatch warnings.

  WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required
  WARNING: min() should probably be min_t(u32, rx_left, dw_readw(dws, DW_SPI_RXFLR))
  WARNING: else is not generally useful after a break or return
  WARNING: Missing a blank line after declarations
  WARNING: void function return statements are not generally useful

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jingoo Han 2014-09-02 11:49:24 +09:00 committed by Mark Brown
parent 859c3377cc
commit fadcace703
1 changed files with 9 additions and 7 deletions
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16
drivers/spi/spi-dw.c
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@ -135,8 +135,7 @@ static int mrst_spi_debugfs_init(struct dw_spi *dws)
static void mrst_spi_debugfs_remove(struct dw_spi *dws)
{
if (dws->debugfs)
debugfs_remove_recursive(dws->debugfs);
debugfs_remove_recursive(dws->debugfs);
}
#else
@ -177,7 +176,7 @@ static inline u32 rx_max(struct dw_spi *dws)
{
u32 rx_left = (dws->rx_end - dws->rx) / dws->n_bytes;
return min(rx_left, (u32)dw_readw(dws, DW_SPI_RXFLR));
return min_t(u32, rx_left, dw_readw(dws, DW_SPI_RXFLR));
}
static void dw_writer(struct dw_spi *dws)
@ -228,8 +227,9 @@ static void *next_transfer(struct dw_spi *dws)
struct spi_transfer,
transfer_list);
return RUNNING_STATE;
} else
return DONE_STATE;
}
return DONE_STATE;
}
/*
@ -471,10 +471,12 @@ static void pump_transfers(unsigned long data)
*/
if (!dws->dma_mapped && !chip->poll_mode) {
int templen = dws->len / dws->n_bytes;
txint_level = dws->fifo_len / 2;
txint_level = (templen > txint_level) ? txint_level : templen;
imask |= SPI_INT_TXEI | SPI_INT_TXOI | SPI_INT_RXUI | SPI_INT_RXOI;
imask |= SPI_INT_TXEI | SPI_INT_TXOI |
SPI_INT_RXUI | SPI_INT_RXOI;
dws->transfer_handler = interrupt_transfer;
}
@ -515,7 +517,6 @@ static void pump_transfers(unsigned long data)
early_exit:
giveback(dws);
return;
}
static int dw_spi_transfer_one_message(struct spi_master *master,
@ -619,6 +620,7 @@ static void spi_hw_init(struct dw_spi *dws)
*/
if (!dws->fifo_len) {
u32 fifo;
for (fifo = 2; fifo <= 257; fifo++) {
dw_writew(dws, DW_SPI_TXFLTR, fifo);
if (fifo != dw_readw(dws, DW_SPI_TXFLTR))