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nand, gpmc: fix reading after switching ecc 

The omap_gpmc allows switching ecc at runtime. Since
the NAND_SUBPAGE_READ flag is only set, it is kept when
switching to hw ecc, which is not correct. This leads to
calling chip->ecc.read_subpage which is not a valid
pointer. Therefore clear the flag when switching ecc so
reading in hw mode works again.

Cc: Scott Wood <scottwood@freescale.com>
Cc: Pekon Gupta <pekon@ti.com>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
utp
Jeroen Hofstee 2014-01-15 17:58:54 +01:00 committed by Tom Rini
parent 09b72d692f
commit 13fbde6e4f
1 changed files with 1 additions and 0 deletions
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drivers/mtd/nand/omap_gpmc.c
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@ -933,6 +933,7 @@ int __maybe_unused omap_nand_switch_ecc(uint32_t hardware, uint32_t eccstrength)
mtd = &nand_info[nand_curr_device];
nand = mtd->priv;
nand->options |= NAND_OWN_BUFFERS;
nand->options &= ~NAND_SUBPAGE_READ;
/* Setup the ecc configurations again */
if (hardware) {
if (eccstrength == 1) {