Hi Alex,
I'd like you to test and comment on the following patch.
Rgds
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
>From c8467c6b0ea0443f948c0ece281e1ca8e92f6ea7 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <[email protected]>
Date: Sat, 3 Feb 2007 13:36:41 +0100
Subject: [PATCH] mmc: tifm: replace kmap with page_address
Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.
Signed-off-by: Pierre Ossman <[email protected]>
---
drivers/mmc/tifm_sd.c | 15 ++++-----------
1 files changed, 4 insertions(+), 11 deletions(-)
diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
index 7e607b7..e65f8a0 100644
--- a/drivers/mmc/tifm_sd.c
+++ b/drivers/mmc/tifm_sd.c
@@ -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;
}
--
1.4.4.2
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