Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753027AbaD2BvW (ORCPT ); Mon, 28 Apr 2014 21:51:22 -0400 Received: from rtits2.realtek.com ([60.250.210.242]:44170 "EHLO rtits2.realtek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751379AbaD2BvT (ORCPT ); Mon, 28 Apr 2014 21:51:19 -0400 X-SpamFilter-By: BOX Solutions SpamTrap 5.39 with qID s3T1opN3019161, This message is accepted by code: ctloc85258 From: To: , , , CC: , , , , , , , Micky Ching Subject: [PATCH 1/2] mmc: rtsx: Revert "mmc: rtsx: modify error handle and remove smatch warnings" Date: Tue, 29 Apr 2014 09:54:53 +0800 Message-ID: <1076b1824732688774d223a14595ecf26a375d82.1398735435.git.micky_ching@realsil.com.cn> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [172.29.41.103] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Micky Ching This reverts commit 1f7b581b3ffcb2a8437397a02f4af89fa6934d08. The patch depend on commit c42deffd5b53c9e583d83c7964854ede2f12410d , but the previous patch was discard. So we have to delete the patch. Signed-off-by: Micky Ching --- drivers/mmc/host/rtsx_pci_sdmmc.c | 119 +++++++++++++++++-------------------- 1 file changed, 54 insertions(+), 65 deletions(-) diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index 09340b9..76cfdcc 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -81,24 +81,25 @@ static inline void sd_clear_error(struct realtek_pci_sdmmc *host) } #ifdef DEBUG -static inline void sd_print_reg(struct realtek_pci_sdmmc *host, u16 reg) -{ - u8 val = 0; - - if (rtsx_pci_read_register(host->pcr, reg, &val) < 0) - dev_dbg(sdmmc_dev(host), "read 0x%04x failed\n", reg); - else - dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", reg, val); -} - static void sd_print_debug_regs(struct realtek_pci_sdmmc *host) { + struct rtsx_pcr *pcr = host->pcr; u16 i; + u8 *ptr; + + /* Print SD host internal registers */ + rtsx_pci_init_cmd(pcr); + for (i = 0xFDA0; i <= 0xFDAE; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); + for (i = 0xFD52; i <= 0xFD69; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); + rtsx_pci_send_cmd(pcr, 100); + ptr = rtsx_pci_get_cmd_data(pcr); for (i = 0xFDA0; i <= 0xFDAE; i++) - sd_print_reg(host, i); + dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); for (i = 0xFD52; i <= 0xFD69; i++) - sd_print_reg(host, i); + dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); } #else #define sd_print_debug_regs(host) @@ -124,27 +125,19 @@ static void sd_request_timeout(unsigned long host_addr) spin_lock_irqsave(&host->lock, flags); if (!host->mrq) { - dev_err(sdmmc_dev(host), "error: request not exist\n"); - spin_unlock_irqrestore(&host->lock, flags); - return; + dev_err(sdmmc_dev(host), "error: no request exist\n"); + goto out; } - if (host->cmd && host->data) - dev_err(sdmmc_dev(host), "error: cmd and data conflict\n"); - - if (host->cmd) { + if (host->cmd) host->cmd->error = -ETIMEDOUT; - dev_dbg(sdmmc_dev(host), "timeout for cmd %d\n", - host->cmd->opcode); - tasklet_schedule(&host->cmd_tasklet); - } - - if (host->data) { + if (host->data) host->data->error = -ETIMEDOUT; - dev_dbg(sdmmc_dev(host), "timeout for data transfer\n"); - tasklet_schedule(&host->data_tasklet); - } + dev_dbg(sdmmc_dev(host), "timeout for request\n"); + +out: + tasklet_schedule(&host->finish_tasklet); spin_unlock_irqrestore(&host->lock, flags); } @@ -164,8 +157,7 @@ static void sd_finish_request(unsigned long host_addr) mrq = host->mrq; if (!mrq) { dev_err(sdmmc_dev(host), "error: no request need finish\n"); - spin_unlock_irqrestore(&host->lock, flags); - return; + goto out; } cmd = mrq->cmd; @@ -175,6 +167,11 @@ static void sd_finish_request(unsigned long host_addr) (mrq->stop && mrq->stop->error) || (cmd && cmd->error) || (data && data->error); + if (any_error) { + rtsx_pci_stop_cmd(pcr); + sd_clear_error(host); + } + if (data) { if (any_error) data->bytes_xfered = 0; @@ -191,6 +188,7 @@ static void sd_finish_request(unsigned long host_addr) host->cmd = NULL; host->data = NULL; +out: spin_unlock_irqrestore(&host->lock, flags); mutex_unlock(&pcr->pcr_mutex); mmc_request_done(host->mmc, mrq); @@ -375,11 +373,8 @@ static void sd_send_cmd(struct realtek_pci_sdmmc *host, struct mmc_command *cmd) if (cmd->opcode == SD_SWITCH_VOLTAGE) { err = rtsx_pci_write_register(pcr, SD_BUS_STAT, 0xFF, SD_CLK_TOGGLE_EN); - if (err < 0) { - rtsx_pci_write_register(pcr, SD_BUS_STAT, - SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); + if (err < 0) goto out; - } } rtsx_pci_init_cmd(pcr); @@ -441,8 +436,7 @@ static void sd_get_rsp(unsigned long host_addr) if (!cmd) { dev_err(sdmmc_dev(host), "error: cmd not exist\n"); - spin_unlock_irqrestore(&host->lock, flags); - return; + goto out; } spin_lock(&pcr->lock); @@ -452,18 +446,16 @@ static void sd_get_rsp(unsigned long host_addr) err = -EINVAL; spin_unlock(&pcr->lock); - if (err < 0) { - rtsx_pci_stop_cmd(host->pcr); - sd_print_debug_regs(host); - sd_clear_error(host); + if (err < 0) goto out; - } rsp_type = host->rsp_type; stat_idx = host->rsp_len; - if (rsp_type == SD_RSP_TYPE_R0) + if (rsp_type == SD_RSP_TYPE_R0) { + err = 0; goto out; + } /* Eliminate returned value of CHECK_REG_CMD */ ptr = rtsx_pci_get_cmd_data(pcr) + 1; @@ -506,19 +498,14 @@ static void sd_get_rsp(unsigned long host_addr) goto out; if (cmd->data) { - err = sd_start_multi_rw(host, host->mrq); - if (err) { - cmd->data->error = err; - dev_err(sdmmc_dev(host), - "error: start data transfer failed\n"); - tasklet_schedule(&host->data_tasklet); - } + sd_start_multi_rw(host, host->mrq); spin_unlock_irqrestore(&host->lock, flags); return; } out: cmd->error = err; + tasklet_schedule(&host->finish_tasklet); spin_unlock_irqrestore(&host->lock, flags); } @@ -538,7 +525,7 @@ static int sd_pre_dma_transfer(struct realtek_pci_sdmmc *host, data->host_cookie = 0; } - if (next || data->host_cookie != host->next_data.cookie) + if (next || (!next && data->host_cookie != host->next_data.cookie)) sg_count = rtsx_pci_dma_map_sg(pcr, data->sg, data->sg_len, read); else @@ -593,6 +580,7 @@ static int sd_start_multi_rw(struct realtek_pci_sdmmc *host, int uhs = mmc_card_uhs(card); int read = data->flags & MMC_DATA_READ; u8 cfg2, trans_mode; + int err; size_t data_len = data->blksz * data->blocks; if (host->data) @@ -653,7 +641,12 @@ static int sd_start_multi_rw(struct realtek_pci_sdmmc *host, mod_timer(&host->timer, jiffies + 10 * HZ); rtsx_pci_send_cmd_no_wait(pcr); - return rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, read); + err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, read); + if (err < 0) { + data->error = err; + tasklet_schedule(&host->finish_tasklet); + } + return 0; } static void sd_finish_multi_rw(unsigned long host_addr) @@ -667,9 +660,8 @@ static void sd_finish_multi_rw(unsigned long host_addr) spin_lock_irqsave(&host->lock, flags); if (!host->data) { - dev_err(sdmmc_dev(host), "error: data not exist\n"); - spin_unlock_irqrestore(&host->lock, flags); - return; + dev_err(sdmmc_dev(host), "error: no data exist\n"); + goto out; } data = host->data; @@ -680,22 +672,19 @@ static void sd_finish_multi_rw(unsigned long host_addr) else if (pcr->trans_result != TRANS_RESULT_OK) err = -EINVAL; - if (err < 0) + if (err < 0) { data->error = err; - - if (data->error) { - rtsx_pci_stop_cmd(host->pcr); - sd_print_debug_regs(host); - sd_clear_error(host); - dev_dbg(sdmmc_dev(host), "data transfer failed %d\n", - data->error); + goto out; } - if (!host->mrq->sbc && data->stop) + if (!host->mrq->sbc && data->stop) { sd_send_cmd(host, data->stop); - else - tasklet_schedule(&host->finish_tasklet); + spin_unlock_irqrestore(&host->lock, flags); + return; + } +out: + tasklet_schedule(&host->finish_tasklet); spin_unlock_irqrestore(&host->lock, flags); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/