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path: root/src/drivers/spi/spi_flash.c
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Diffstat (limited to 'src/drivers/spi/spi_flash.c')
-rw-r--r--src/drivers/spi/spi_flash.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c
index 0d67c43385..d737ee9e61 100644
--- a/src/drivers/spi/spi_flash.c
+++ b/src/drivers/spi/spi_flash.c
@@ -46,6 +46,9 @@ static int do_spi_flash_cmd(struct spi_slave *spi, const void *dout,
{
int ret = 1;
+ if (spi_claim_bus(spi))
+ return ret;
+
#if CONFIG_SPI_ATOMIC_SEQUENCING == 1
if (spi_xfer(spi, dout, bytes_out, din, bytes_in) < 0)
goto done;
@@ -63,6 +66,7 @@ static int do_spi_flash_cmd(struct spi_slave *spi, const void *dout,
ret = 0;
done:
+ spi_release_bus(spi);
return ret;
}
@@ -111,9 +115,7 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
int ret;
spi->rw = SPI_READ_FLAG;
- spi_claim_bus(spi);
ret = spi_flash_cmd_read(spi, cmd, cmd_len, data, data_len);
- spi_release_bus(spi);
return ret;
}
@@ -188,11 +190,6 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
}
flash->spi->rw = SPI_WRITE_FLAG;
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- printk(BIOS_WARNING, "SF: Unable to claim SPI bus\n");
- return ret;
- }
cmd[0] = erase_cmd;
start = offset;
@@ -222,7 +219,6 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
printk(BIOS_DEBUG, "SF: Successfully erased %zu bytes @ %#x\n", len, start);
out:
- spi_release_bus(flash->spi);
return ret;
}
@@ -307,11 +303,6 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs)
}
spi->rw = SPI_READ_FLAG;
- ret = spi_claim_bus(spi);
- if (ret) {
- printk(BIOS_WARNING, "SF: Failed to claim SPI bus: %d\n", ret);
- goto err_claim_bus;
- }
if (spi->force_programmer_specific && spi->programmer_specific_probe) {
flash = spi->programmer_specific_probe (spi);
@@ -375,13 +366,9 @@ flash_detected:
printk(BIOS_INFO, "SF: Detected %s with page size %x, total %x\n",
flash->name, flash->sector_size, flash->size);
- spi_release_bus(spi);
-
return flash;
err_manufacturer_probe:
err_read_id:
- spi_release_bus(spi);
-err_claim_bus:
return NULL;
}