diff options
| author | James Bottomley <jejb@titanic.(none)> | 2005-12-15 17:35:24 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@titanic.(none)> | 2005-12-15 17:35:24 -0600 |
| commit | 2a1e1379bae53f647c463a677cc2ec71b591c348 (patch) | |
| tree | a152beb5e8679e94430c5b47bf798dd8a2d4fd5d /drivers/mmc/mmc.c | |
| parent | 787926b1b2d21d42ca462dc736b77f1a4a30c503 (diff) | |
| parent | 7b6666530e2736f190a2629c8abe34275054449f (diff) | |
Merge by hand (conflicts in scsi_lib.c)
This merge is pretty extensive. The conflict is over the new
req->retries parameter, so I had to change the prototype to
scsi_setup_blk_pc_cmnd() and the usage in sd, sr and st.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index b586a83a9b4..eb41391e06e 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -679,7 +679,15 @@ static void mmc_idle_cards(struct mmc_host *host) } /* - * Apply power to the MMC stack. + * Apply power to the MMC stack. This is a two-stage process. + * First, we enable power to the card without the clock running. + * We then wait a bit for the power to stabilise. Finally, + * enable the bus drivers and clock to the card. + * + * We must _NOT_ enable the clock prior to power stablising. + * + * If a host does all the power sequencing itself, ignore the + * initial MMC_POWER_UP stage. */ static void mmc_power_up(struct mmc_host *host) { |