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Subject[PATCH 1/8] staging: kpc2000: add line breaks
Date
To fix some checkpatch-warnings some lines of this module had to be
shortened so that they do not exceed 80 characters per line.
This refactoring makes the code more readable.

Signed-off-by: Fabian Krueger <fabian.krueger@fau.de>
Signed-off-by: Michael Scheiderer <michael.scheiderer@fau.de>
Cc: <linux-kernel@i4.cs.fau.de>
---
drivers/staging/kpc2000/kpc2000_spi.c | 34 +++++++++++++++++----------
1 file changed, 22 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/kpc2000/kpc2000_spi.c b/drivers/staging/kpc2000/kpc2000_spi.c
index c3e5c1848f53..b0b5c9b4d35a 100644
--- a/drivers/staging/kpc2000/kpc2000_spi.c
+++ b/drivers/staging/kpc2000/kpc2000_spi.c
@@ -36,6 +36,7 @@ static struct mtd_partition p2kr0_spi0_parts[] = {
{ .name = "SLOT_3", .size = 7798784, .offset = MTDPART_OFS_NXTBLK},
{ .name = "CS0_EXTRA", .size = MTDPART_SIZ_FULL, .offset = MTDPART_OFS_NXTBLK},
};
+
static struct mtd_partition p2kr0_spi1_parts[] = {
{ .name = "SLOT_4", .size = 7798784, .offset = 0, },
{ .name = "SLOT_5", .size = 7798784, .offset = MTDPART_OFS_NXTBLK},
@@ -182,7 +183,8 @@ kp_spi_write_reg(struct kp_spi_controller_state *cs, int idx, u64 val)
}

static int
-kp_spi_wait_for_reg_bit(struct kp_spi_controller_state *cs, int idx, unsigned long bit)
+kp_spi_wait_for_reg_bit(struct kp_spi_controller_state *cs, int idx,
+ unsigned long bit)
{
unsigned long timeout;
timeout = jiffies + msecs_to_jiffies(1000);
@@ -207,6 +209,7 @@ kp_spi_txrx_pio(struct spi_device *spidev, struct spi_transfer *transfer)
unsigned int c = count;

int i;
+ int res;
u8 *rx = transfer->rx_buf;
const u8 *tx = transfer->tx_buf;
int processed = 0;
@@ -215,9 +218,10 @@ kp_spi_txrx_pio(struct spi_device *spidev, struct spi_transfer *transfer)
for (i = 0 ; i < c ; i++) {
char val = *tx++;

- if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS, KP_SPI_REG_STATUS_TXS) < 0) {
+ res = kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS,
+ KP_SPI_REG_STATUS_TXS);
+ if (res < 0)
goto out;
- }

kp_spi_write_reg(cs, KP_SPI_REG_TXDATA, val);
processed++;
@@ -228,10 +232,10 @@ kp_spi_txrx_pio(struct spi_device *spidev, struct spi_transfer *transfer)
char test=0;

kp_spi_write_reg(cs, KP_SPI_REG_TXDATA, 0x00);
-
- if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS, KP_SPI_REG_STATUS_RXS) < 0) {
+ res = kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS,
+ KP_SPI_REG_STATUS_RXS);
+ if (res < 0)
goto out;
- }

test = kp_spi_read_reg(cs, KP_SPI_REG_RXDATA);
*rx++ = test;
@@ -239,8 +243,10 @@ kp_spi_txrx_pio(struct spi_device *spidev, struct spi_transfer *transfer)
}
}

- if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS, KP_SPI_REG_STATUS_EOT) < 0) {
- //TODO: Figure out how to abort transaction?? This has never happened in practice though...
+ if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS,
+ KP_SPI_REG_STATUS_EOT) < 0) {
+ //TODO: Figure out how to abort transaction??
+ //Ths has never happened in practice though...
}

out:
@@ -307,7 +313,8 @@ kp_spi_transfer_one_message(struct spi_master *master, struct spi_message *m)
void *rx_buf = transfer->rx_buf;
unsigned len = transfer->len;

- if (transfer->speed_hz > KP_SPI_CLK || (len && !(rx_buf || tx_buf))) {
+ if (transfer->speed_hz > KP_SPI_CLK ||
+ (len && !(rx_buf || tx_buf))) {
dev_dbg(kpspi->dev, " transfer: %d Hz, %d %s%s, %d bpw\n",
transfer->speed_hz,
len,
@@ -317,7 +324,8 @@ kp_spi_transfer_one_message(struct spi_master *master, struct spi_message *m)
dev_dbg(kpspi->dev, " transfer -EINVAL\n");
return -EINVAL;
}
- if (transfer->speed_hz && (transfer->speed_hz < (KP_SPI_CLK >> 15))) {
+ if (transfer->speed_hz &&
+ transfer->speed_hz < (KP_SPI_CLK >> 15)) {
dev_dbg(kpspi->dev, "speed_hz %d below minimum %d Hz\n",
transfer->speed_hz,
KP_SPI_CLK >> 15);
@@ -332,14 +340,16 @@ kp_spi_transfer_one_message(struct spi_master *master, struct spi_message *m)
kp_spi_write_reg(cs, KP_SPI_REG_CONFIG, sc.reg);

/* work */
- if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS, KP_SPI_REG_STATUS_EOT) < 0) {
+ if (kp_spi_wait_for_reg_bit(cs, KP_SPI_REG_STATUS,
+ KP_SPI_REG_STATUS_EOT) < 0) {
dev_info(kpspi->dev, "EOT timed out\n");
goto out;
}

/* do the transfers for this message */
list_for_each_entry(transfer, &m->transfers, transfer_list) {
- if (transfer->tx_buf == NULL && transfer->rx_buf == NULL && transfer->len) {
+ if (!transfer->tx_buf && !transfer->rx_buf &&
+ transfer->len) {
status = -EINVAL;
goto error;
}
--
2.17.1
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