Hi, Andy, There is not any feedback for very long time. Could it be applied to u-boot?
Best Regards Jerry Huang > -----Original Message----- > From: Huang Changming-R66093 > Sent: Friday, May 18, 2012 5:01 PM > To: u-boot@lists.denx.de > Cc: Huang Changming-R66093; Andy Fleming; Marek Vasut > Subject: [PATCH] SD/MMC: check the card status during erase operation > > From: Jerry Huang <chang-ming.hu...@freescale.com> > > Use the function 'mmc_send_status' to check the card status. > only when the card is ready, driver can send the next erase command > to the card, otherwise, the erase will failed: > => mmc erase 0 1 > MMC erase: dev # 0, block # 0, count 1 ... 1 blocks erase: OK > => mmc erase 0 2 > MMC erase: dev # 0, block # 0, count 2 ... mmc erase failed > 1 blocks erase: ERROR > => mmc erase 0 4 > MMC erase: dev # 0, block # 0, count 4 ... mmc erase failed > 1 blocks erase: ERROR > > Signed-off-by: Jerry Huang <chang-ming.hu...@freescale.com> > CC: Andy Fleming <aflem...@gmail.com> > CC: Marek Vasut <ma...@denx.de> > --- > drivers/mmc/mmc.c | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c > index 596732e..f92b662 100644 > --- a/drivers/mmc/mmc.c > +++ b/drivers/mmc/mmc.c > @@ -333,6 +333,7 @@ mmc_berase(int dev_num, unsigned long start, lbaint_t > blkcnt) > int err = 0; > struct mmc *mmc = find_mmc_device(dev_num); > lbaint_t blk = 0, blk_r = 0; > + int timeout = 1000; > > if (!mmc) > return -1; > @@ -352,6 +353,10 @@ mmc_berase(int dev_num, unsigned long start, > lbaint_t blkcnt) > break; > > blk += blk_r; > + > + /* Waiting for the ready status */ > + if (mmc_send_status(mmc, timeout)) > + return 0; > } > > return blk; > -- > 1.7.5.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
