From 5dc63fa2c2e149dd3e8128e54c9ca251d0558ea0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 4 Mar 2013 17:35:24 +0100 Subject: [PATCH] mtd: mtdchar: handle chips that have user otp but no factory otp MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Before this patch mtd_read_fact_prot_reg was used to check availability for both MTD_OTP_FACTORY and MTD_OTP_USER access. This made accessing user otp for chips that don't have a factory otp area impossible. So use the right wrapper depending on the intended area to be accessed. Signed-off-by: Uwe Kleine-König Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 92ab30ab00dc..c2b6729da496 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -370,28 +370,30 @@ static int otp_select_filemode(struct mtd_file_info *mfi, int mode) { struct mtd_info *mtd = mfi->mtd; size_t retlen; - int ret = 0; - - /* - * Make a fake call to mtd_read_fact_prot_reg() to check if OTP - * operations are supported. - */ - if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) == -EOPNOTSUPP) - return -EOPNOTSUPP; switch (mode) { case MTD_OTP_FACTORY: + if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) == + -EOPNOTSUPP) + return -EOPNOTSUPP; + mfi->mode = MTD_FILE_MODE_OTP_FACTORY; break; case MTD_OTP_USER: + if (mtd_read_user_prot_reg(mtd, -1, 0, &retlen, NULL) == + -EOPNOTSUPP) + return -EOPNOTSUPP; + mfi->mode = MTD_FILE_MODE_OTP_USER; break; - default: - ret = -EINVAL; case MTD_OTP_OFF: + mfi->mode = MTD_FILE_MODE_NORMAL; break; + default: + return -EINVAL; } - return ret; + + return 0; } #else # define otp_select_filemode(f,m) -EOPNOTSUPP -- 2.20.1