[MTD] Fix default timeouts for Intel NOR flash

In commit c172471b78255a5cf6d05383d9ebbf0c6683167a Nico switched to using
common code for polling for command completion. Unfortunately he also used
a common default timeout for both write and erase commands, despite the
fact that erases can take a _whole_ lot longer. Use a more sensible
default for erase timeout.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 17 insertions, 3 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index f69184a92eb2..d40262518b25 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -397,9 +397,23 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
         cfi_fixup(mtd, fixup_table);
 
         for (i=0; i< cfi->numchips; i++) {
-                cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp;
-                cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp;
-                cfi->chips[i].erase_time = 1000<<cfi->cfiq->BlockEraseTimeoutTyp;
+                if (cfi->cfiq->WordWriteTimeoutTyp)
+                        cfi->chips[i].word_write_time =
+                                1<<cfi->cfiq->WordWriteTimeoutTyp;
+                else
+                        cfi->chips[i].word_write_time = 50000;
+
+                if (cfi->cfiq->BufWriteTimeoutTyp)
+                        cfi->chips[i].buffer_write_time =
+                                1<<cfi->cfiq->BufWriteTimeoutTyp;
+                /* No default; if it isn't specified, we won't use it */
+
+                if (cfi->cfiq->BlockEraseTimeoutTyp)
+                        cfi->chips[i].erase_time =
+                                1000<<cfi->cfiq->BlockEraseTimeoutTyp;
+                else
+                        cfi->chips[i].erase_time = 2000000;
+
                 cfi->chips[i].ref_point_counter = 0;
                 init_waitqueue_head(&(cfi->chips[i].wq));
         }