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memstick: automatically retrieve "INT" value from command response

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MemoryStick storage cards, when in parallel mode, send several meaningful bits
of their "INT" register as part of command response.  This data is stored by
host and can be used to spare invocation of "GET_INT" TPC on each data page
transferred between host and card.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Dubov
2008-03-19 17:01:06 -07:00
committed by Linus Torvalds
parent 9df130392f
commit ead7077360
5 changed files with 49 additions and 41 deletions
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9
drivers/memstick/core/memstick.c
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@ -276,8 +276,6 @@ void memstick_init_req_sg(struct memstick_request *mrq, unsigned char tpc,
mrq->need_card_int = 1;
else
mrq->need_card_int = 0;
mrq->get_int_reg = 0;
}
EXPORT_SYMBOL(memstick_init_req_sg);
@ -311,8 +309,6 @@ void memstick_init_req(struct memstick_request *mrq, unsigned char tpc,
mrq->need_card_int = 1;
else
mrq->need_card_int = 0;
mrq->get_int_reg = 0;
}
EXPORT_SYMBOL(memstick_init_req);
@ -342,6 +338,7 @@ static int h_memstick_read_dev_id(struct memstick_dev *card,
card->id.class = id_reg.class;
}
complete(&card->mrq_complete);
dev_dbg(&card->dev, "if_mode = %02x\n", id_reg.if_mode);
return -EAGAIN;
}
}
@ -422,7 +419,6 @@ static void memstick_power_on(struct memstick_host *host)
{
host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
msleep(1);
}
static void memstick_check(struct work_struct *work)
@ -579,7 +575,8 @@ EXPORT_SYMBOL(memstick_suspend_host);
void memstick_resume_host(struct memstick_host *host)
{
mutex_lock(&host->lock);
host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
if (host->card)
memstick_power_on(host);
mutex_unlock(&host->lock);
memstick_detect_change(host);
}