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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Driver for Realtek driver-based card reader
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*
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* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Wei WANG <wei_wang@realsil.com.cn>
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*/
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#ifndef __RTSX_COMMON_H
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#define __RTSX_COMMON_H
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#define DRV_NAME_RTSX_PCI "rtsx_pci"
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#define DRV_NAME_RTSX_PCI_SDMMC "rtsx_pci_sdmmc"
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#define DRV_NAME_RTSX_PCI_MS "rtsx_pci_ms"
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#define RTSX_REG_PAIR(addr, val) (((u32)(addr) << 16) | (u8)(val))
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#define RTSX_SSC_DEPTH_4M 0x01
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#define RTSX_SSC_DEPTH_2M 0x02
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#define RTSX_SSC_DEPTH_1M 0x03
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#define RTSX_SSC_DEPTH_500K 0x04
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#define RTSX_SSC_DEPTH_250K 0x05
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#define RTSX_SD_CARD 0
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#define RTSX_MS_CARD 1
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#define CLK_TO_DIV_N 0
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#define DIV_N_TO_CLK 1
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struct platform_device;
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struct rtsx_slot {
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struct platform_device *p_dev;
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void (*card_event)(struct platform_device *p_dev);
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};
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#endif
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