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mmc: tifm: replace kmap with page_address

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Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman 2007-02-03 13:36:41 +01:00
parent c70840e819
commit f9d429a2e5
1 changed files with 4 additions and 11 deletions
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15
drivers/mmc/tifm_sd.c
View file

@ -107,14 +107,9 @@ struct tifm_sd {
};
static char* tifm_sd_kmap_atomic(struct mmc_data *data)
static char* tifm_sd_data_buffer(struct mmc_data *data)
{
return kmap_atomic(data->sg->page, KM_BIO_SRC_IRQ) + data->sg->offset;
}
static void tifm_sd_kunmap_atomic(char *buffer, struct mmc_data *data)
{
kunmap_atomic(buffer - data->sg->offset, KM_BIO_SRC_IRQ);
return page_address(data->sg->page) + data->sg->offset;
}
static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
@ -127,18 +122,17 @@ static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
if (host_status & TIFM_MMCSD_BRS) {
/* in non-dma rx mode BRS fires when fifo is still not empty */
if (no_dma && (cmd->data->flags & MMC_DATA_READ)) {
buffer = tifm_sd_kmap_atomic(host->req->data);
buffer = tifm_sd_data_buffer(host->req->data);
while (host->buffer_size > host->buffer_pos) {
t_val = readl(sock->addr + SOCK_MMCSD_DATA);
buffer[host->buffer_pos++] = t_val & 0xff;
buffer[host->buffer_pos++] =
(t_val >> 8) & 0xff;
}
tifm_sd_kunmap_atomic(buffer, host->req->data);
}
return 1;
} else if (no_dma) {
buffer = tifm_sd_kmap_atomic(host->req->data);
buffer = tifm_sd_data_buffer(host->req->data);
if ((cmd->data->flags & MMC_DATA_READ) &&
(host_status & TIFM_MMCSD_AF)) {
for (cnt = 0; cnt < TIFM_MMCSD_FIFO_SIZE; cnt++) {
@ -163,7 +157,6 @@ static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
}
}
}
tifm_sd_kunmap_atomic(buffer, host->req->data);
}
return 0;
}