[PATCH] board: st: common: update test on misc_read result in command stboard

[Patrick Delaunay]

Update management of misc_read/misc_write, which now returns length of
data after the commit 8729b1ae2cbd ("misc: Update read() and write()
methods to return bytes xfered"): raise a error when the result is not
the expected length.

Fixes: 658fde8a36ff ("board: stm32mp1: stboard: lock the OTP after programming")
Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 board/st/common/cmd_stboard.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/board/st/common/cmd_stboard.c b/board/st/common/cmd_stboard.c
index 2fba383168..c1ecd643b0 100644
--- a/board/st/common/cmd_stboard.c
+++ b/board/st/common/cmd_stboard.c
@@ -91,14 +91,14 @@ static int do_stboard(struct cmd_tbl *cmdtp, int flag, int argc,
 	ret = misc_read(dev, STM32_BSEC_OTP(BSEC_OTP_BOARD),
 			&otp, sizeof(otp));
 
-	if (ret < 0) {
+	if (ret != sizeof(otp)) {
 		puts("OTP read error");
 		return CMD_RET_FAILURE;
 	}
 
 	ret = misc_read(dev, STM32_BSEC_LOCK(BSEC_OTP_BOARD),
 			&lock, sizeof(lock));
-	if (ret < 0) {
+	if (ret != sizeof(lock)) {
 		puts("LOCK read error");
 		return CMD_RET_FAILURE;
 	}
@@ -172,7 +172,7 @@ static int do_stboard(struct cmd_tbl *cmdtp, int flag, int argc,
 	ret = misc_write(dev, STM32_BSEC_OTP(BSEC_OTP_BOARD),
 			 &otp, sizeof(otp));
 
-	if (ret < 0) {
+	if (ret != sizeof(otp)) {
 		puts("BOARD programming error\n");
 		return CMD_RET_FAILURE;
 	}
@@ -181,7 +181,7 @@ static int do_stboard(struct cmd_tbl *cmdtp, int flag, int argc,
 	otp = 1;
 	ret = misc_write(dev, STM32_BSEC_LOCK(BSEC_OTP_BOARD),
 			 &otp, sizeof(otp));
-	if (ret < 0) {
+	if (ret != sizeof(otp)) {
 		puts("BOARD lock error\n");
 		return CMD_RET_FAILURE;
 	}
-- 
2.25.1