From 9905757e298f37c59587d1a07b1ad8cdbed4e063 Mon Sep 17 00:00:00 2001
From: Shaohui Xie <Shaohui.Xie@freescale.com>
Date: Thu, 11 Oct 2012 20:31:46 +0000
Subject: [PATCH] powerpc/espi: remove write command length check
Current espi controller driver assumes the command length of write command is
not equal to '1', it was made based on SPANSION SPI flash, but some SPI flash
driver such as SST does use write command length as '1', so write command on
SST SPI flash will not work. And the length check for write command is not
necessary for SPANSION, though it's harmless for SPANSION, it will stop write
operation on flashes like SST, so we remove the check.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---
drivers/spi/fsl_espi.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/fsl_espi.c b/drivers/spi/fsl_espi.c
index a1ebd330d7..eb99e90bec 100644
--- a/drivers/spi/fsl_espi.c
+++ b/drivers/spi/fsl_espi.c
@@ -216,10 +216,8 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *data_out,
return 1;
}
memcpy(buffer, cmd_buf, cmd_len);
- if (cmd_len != 1) {
- if (data_in == NULL)
- memcpy(buffer + cmd_len, data_out, data_len);
- }
+ if (data_in == NULL)
+ memcpy(buffer + cmd_len, data_out, data_len);
break;
case SPI_XFER_BEGIN | SPI_XFER_END:
len = data_len;
--
2.39.5