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Commit 2b061973 authored by Pierre Ossman's avatar Pierre Ossman
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sdhci: be more cautious about block count register 



The block count register shouldn't be trusted for single block transfers,
so avoid using it completely when calculating transferred bytes.

Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent be760a9d

drivers/mmc/host/sdhci.c

+2 −2
Original line number Diff line number Diff line
@@ -477,8 +477,8 @@ static void sdhci_finish_data(struct sdhci_host *host) 
	/*

	 * Controller doesn't count down when in single block mode.

	 */

	if ((data->blocks == 1) && (data->error == MMC_ERR_NONE))

		blocks = 0;

	if (data->blocks == 1)

		blocks = (data->error == MMC_ERR_NONE) ? 0 : 1;

	else

		blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT);

	data->bytes_xfered = data->blksz * (data->blocks - blocks);