[PATCH v3 04/32] mtd: spi-nor: Stop compare with negative in Reg Ops methods

Tudor.Ambarus
2019-10-29T11:17:00Z

From: Tudor Ambarus <tudor.ambarus@microchip.com>

spi_mem_exec_op()
nor->controller_ops->write_reg()
nor->controller_ops->read_reg()
spi_nor_wait_till_ready()
Return 0 on success, -errno otherwise.

Stop compare with negative and compare with zero in all the register
operations methods.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/mtd/spi-nor/spi-nor.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 24378d65fa2e..4d3c37658ea5 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -447,7 +447,7 @@ static int spi_nor_read_sr(struct spi_nor *nor)
nor->bouncebuf, 1);
}

- if (ret < 0) {
+ if (ret) {
pr_err("error %d reading SR\n", (int) ret);
return ret;
}
@@ -477,7 +477,7 @@ static int spi_nor_read_fsr(struct spi_nor *nor)
nor->bouncebuf, 1);
}

- if (ret < 0) {
+ if (ret) {
pr_err("error %d reading FSR\n", ret);
return ret;
}
@@ -507,7 +507,7 @@ static int spi_nor_read_cr(struct spi_nor *nor)
nor->bouncebuf, 1);
}

- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev, "error %d reading CR\n", ret);
return ret;
}
@@ -643,7 +643,7 @@ static int s3an_sr_ready(struct spi_nor *nor)
int ret;

ret = spi_nor_xread_sr(nor, nor->bouncebuf);
- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev, "error %d reading XRDSR\n", (int) ret);
return ret;
}
@@ -800,7 +800,7 @@ static int spi_nor_write_sr_cr(struct spi_nor *nor, u8 *sr_cr)
sr_cr, 2);
}

- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev,
"error while writing configuration register\n");
return -EINVAL;
@@ -1930,20 +1930,23 @@ static int sr2_bit7_quad_enable(struct spi_nor *nor)
spi_nor_write_enable(nor);

ret = spi_nor_write_sr2(nor, sr2);
- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev, "error while writing status register 2\n");
return -EINVAL;
}

ret = spi_nor_wait_till_ready(nor);
- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev, "timeout while writing status register 2\n");
return ret;
}

/* Read back and check it. */
ret = spi_nor_read_sr2(nor, sr2);
- if (!(ret > 0 && (*sr2 & SR2_QUAD_EN_BIT7))) {
+ if (ret)
+ return ret;
+
+ if (!(*sr2 & SR2_QUAD_EN_BIT7)) {
dev_err(nor->dev, "SR2 Quad bit not set\n");
return -EINVAL;
}
@@ -2534,7 +2537,7 @@ static const struct flash_info *spi_nor_read_id(struct spi_nor *nor)
tmp = nor->controller_ops->read_reg(nor, SPINOR_OP_RDID, id,
SPI_NOR_MAX_ID_LEN);
}
- if (tmp < 0) {
+ if (tmp) {
dev_err(nor->dev, "error %d reading JEDEC ID\n", tmp);
return ERR_PTR(tmp);
}
@@ -2751,7 +2754,7 @@ static int s3an_nor_setup(struct spi_nor *nor,
int ret;

ret = spi_nor_xread_sr(nor, nor->bouncebuf);
- if (ret < 0) {
+ if (ret) {
dev_err(nor->dev, "error %d reading XRDSR\n", (int) ret);
return ret;
}
--
2.9.5