diff options
| author | Vipin Kumar <vipin.kumar@st.com> | 2012-05-07 13:00:25 +0530 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:39 +0200 |
| commit | a5ad7ccd74de244f91d75fb3879eaa1929304e89 (patch) | |
| tree | 7a6de91a175f462344ccf7fb0569178391368269 /drivers | |
| parent | a59c7b37b908639f9daa7fe50d4646b3947e2d62 (diff) | |
st_smi: Fix smi read status
smi_read_sr fails sometimes because of TFF not getting set within assumed time.
This condition may arise because of, for example, smi memory being in a erase
mode.
This fix is to enable reading the status register until timeout.
Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/st_smi.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/mtd/st_smi.c b/drivers/mtd/st_smi.c index 8c276036af..38f22b736e 100644 --- a/drivers/mtd/st_smi.c +++ b/drivers/mtd/st_smi.c @@ -188,9 +188,7 @@ static int smi_wait_till_ready(int bank, int timeout) but potentially three seconds (!) after page erase. */ do { sr = smi_read_sr(bank); - if (sr < 0) - continue; /* try until timeout */ - else if (!(sr & WIP_BIT)) + if ((sr >= 0) && (!(sr & WIP_BIT))) return 0; /* Try again after 1m-sec */ @@ -231,9 +229,7 @@ static int smi_write_enable(int bank) do { sr = smi_read_sr(bank); - if (sr < 0) - break; - else if (sr & (1 << (bank + WM_SHIFT))) + if ((sr >= 0) && (sr & (1 << (bank + WM_SHIFT)))) return 0; /* Try again after 1m-sec */ |