51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
From 6ec7d69f08cfb772fdf5d7c55ed9da2273677a4d Mon Sep 17 00:00:00 2001
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From: Andy Green <andy@openmoko.com>
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Date: Sun, 20 Jul 2008 18:43:15 +0100
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Subject: [PATCH] fix-scard-stop-on-resume.patch
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Reported-by: Ville-Pekka Vainio <vpivaini@cs.helsinki.fi>
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The reporter noticed SD Card clock is running again after resume. After
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looking at the code I saw I missed two tricks, this will force it off
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after resume and will do better generally depending on what the last SD Card
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packet was.
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Since bulk read packet is normally last action (which set the clock off even
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without this) the old patch worked for normal cases. But after resume, the last
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packet on the wire was not a bulk transfer and we didn't take care about the
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clock then.
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Signed-off-by: Andy Green <andy@openmoko.com>
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---
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drivers/mfd/glamo/glamo-mci.c | 6 +++---
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1 files changed, 3 insertions(+), 3 deletions(-)
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diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c
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index 6729244..2318e6f 100644
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--- a/drivers/mfd/glamo/glamo-mci.c
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+++ b/drivers/mfd/glamo/glamo-mci.c
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@@ -619,12 +619,9 @@ done:
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host->complete_what = COMPLETION_NONE;
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host->mrq = NULL;
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mmc_request_done(host->mmc, cmd->mrq);
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- return;
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-
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bail:
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/* stop the clock to card */
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__glamo_mci_fix_card_div(host, -1);
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- return;
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}
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static void glamo_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
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@@ -690,6 +687,9 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
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host->real_rate = __glamo_mci_set_card_clock(host, ios->clock, &div);
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host->clk_div = div;
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+ /* stop the clock to card, because we are idle until transfer */
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+ __glamo_mci_fix_card_div(host, -1);
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+
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if ((ios->power_mode == MMC_POWER_ON) ||
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(ios->power_mode == MMC_POWER_UP)) {
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dev_info(&host->pdev->dev,
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--
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1.5.6.5
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