linux-kernel - [PATCH v4 1/5] fpga: zynq: Fix incorrect variable type

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Date:   Sat, 16 Apr 2022 19:07:15 +0530
From:   Nava kishore Manne <nava.manne@...inx.com>
To:     <mdf@...nel.org>, <hao.wu@...el.com>, <yilun.xu@...el.com>,
        <trix@...hat.com>, <michal.simek@...inx.com>,
        <linux-fpga@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <git@...inx.com>
CC:     Nava kishore Manne <nava.manne@...inx.com>
Subject: [PATCH v4 1/5] fpga: zynq: Fix incorrect variable type

zynq_fpga_has_sync () API is expecting "u8 *" but the
formal parameter that was passed is of type "const char *".
fixes this issue by changing the buf type to "const char *"

This patch will also update zynq_fpga_has_sync () API description
to align with API functionality.

Signed-off-by: Nava kishore Manne <nava.manne@...inx.com>
---
Changes for v2:
                -None.
Changes for v3:
               - Changed arg buf type to "const char *" as suggested by Tom.
               - update zynq_fpga_has_sync () API description to align with API
                 functionality.
Changes for v4:
               - None.

 drivers/fpga/zynq-fpga.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
index 426aa34c6a0d..ada07eea64bc 100644
--- a/drivers/fpga/zynq-fpga.c
+++ b/drivers/fpga/zynq-fpga.c
@@ -235,11 +235,11 @@ static irqreturn_t zynq_fpga_isr(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-/* Sanity check the proposed bitstream. It must start with the sync word in
- * the correct byte order, and be dword aligned. The input is a Xilinx .bin
- * file with every 32 bit quantity swapped.
+/* Sanity check the proposed bitstream. The sync word must be found in the
+ * correct byte order and it should be dword aligned. The input is a
+ * Xilinx.bin file with every 32 bit quantity swapped.
  */
-static bool zynq_fpga_has_sync(const u8 *buf, size_t count)
+static bool zynq_fpga_has_sync(const char *buf, size_t count)
 {
 	for (; count >= 4; buf += 4, count -= 4)
 		if (buf[0] == 0x66 && buf[1] == 0x55 && buf[2] == 0x99 &&
-- 
2.25.1