mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
98fcc5762d
This reverts commit c42deffd5b.
commit <mmc: rtsx: add support for pre_req and post_req> did use
mutex_unlock() in tasklet, but mutex_unlock() can't be used in
tasklet(atomic context). The driver needs to use mutex to avoid
concurrency, so we can't use tasklet here, the patch need to be
removed.
The spinlock host->lock and pcr->lock may deadlock, one way to solve
the deadlock is remove host->lock in sd_isr_done_transfer(), but if
using workqueue the we can avoid using the spinlock and also avoid
the problem.
Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* Driver for Realtek driver-based card reader
|
|
*
|
|
* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author:
|
|
* Wei WANG <wei_wang@realsil.com.cn>
|
|
*/
|
|
|
|
#ifndef __RTSX_COMMON_H
|
|
#define __RTSX_COMMON_H
|
|
|
|
#define DRV_NAME_RTSX_PCI "rtsx_pci"
|
|
#define DRV_NAME_RTSX_PCI_SDMMC "rtsx_pci_sdmmc"
|
|
#define DRV_NAME_RTSX_PCI_MS "rtsx_pci_ms"
|
|
|
|
#define RTSX_REG_PAIR(addr, val) (((u32)(addr) << 16) | (u8)(val))
|
|
|
|
#define RTSX_SSC_DEPTH_4M 0x01
|
|
#define RTSX_SSC_DEPTH_2M 0x02
|
|
#define RTSX_SSC_DEPTH_1M 0x03
|
|
#define RTSX_SSC_DEPTH_500K 0x04
|
|
#define RTSX_SSC_DEPTH_250K 0x05
|
|
|
|
#define RTSX_SD_CARD 0
|
|
#define RTSX_MS_CARD 1
|
|
|
|
#define CLK_TO_DIV_N 0
|
|
#define DIV_N_TO_CLK 1
|
|
|
|
struct platform_device;
|
|
|
|
struct rtsx_slot {
|
|
struct platform_device *p_dev;
|
|
void (*card_event)(struct platform_device *p_dev);
|
|
};
|
|
|
|
#endif
|