From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Wed, 15 Apr 2015 11:13:28 +0000 (+0200)
Subject: zynq: spi: Remove unnecessary error condition
X-Git-Tag: KARO-TXSD-2017-03-15~4695^2~9
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=8c48a68346038fdaa901e622760fe4c6a302220b

zynq: spi: Remove unnecessary error condition

Removed the unnecessary error check from spi_xfer
as the bitlen zero is possible now to deassert the
chip select for which no data is required to be transfered.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
---

diff --git a/drivers/spi/zynq_spi.c b/drivers/spi/zynq_spi.c
index 5da87591ce..e9129da79d 100644
--- a/drivers/spi/zynq_spi.c
+++ b/drivers/spi/zynq_spi.c
@@ -227,9 +227,6 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
 	debug("spi_xfer: bus:%i cs:%i bitlen:%i len:%i flags:%lx\n",
 	      slave->bus, slave->cs, bitlen, len, flags);
 
-	if (bitlen == 0)
-		return -1;
-
 	if (bitlen % 8) {
 		debug("spi_xfer: Non byte aligned SPI transfer\n");
 		return -1;