From 0f6422a2c57c6afcf66ead903dc3fa6641184aa4 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 27 Apr 2017 16:29:26 -0600 Subject: [PATCH] mtip32xx: get rid of 'atomic' argument to mtip_exec_internal_command() All callers can safely block. Kill the atomic/block argument, and remove the argument from all callers. Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Tested-by: Ming Lei Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 148 +++++++++--------------------- 1 file changed, 43 insertions(+), 105 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 02804cc79d82..d81d797ee65d 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -609,11 +609,6 @@ static void mtip_completion(struct mtip_port *port, complete(waiting); } -static void mtip_null_completion(struct mtip_port *port, - int tag, struct mtip_cmd *command, int status) -{ -} - static int mtip_read_log_page(struct mtip_port *port, u8 page, u16 *buffer, dma_addr_t buffer_dma, unsigned int sectors); static int mtip_get_smart_attr(struct mtip_port *port, unsigned int id, @@ -1117,7 +1112,6 @@ static int mtip_exec_internal_command(struct mtip_port *port, dma_addr_t buffer, int buf_len, u32 opts, - gfp_t atomic, unsigned long timeout) { struct mtip_cmd_sg *command_sg; @@ -1146,30 +1140,22 @@ static int mtip_exec_internal_command(struct mtip_port *port, clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags); - if (atomic == GFP_KERNEL) { - if (fis->command != ATA_CMD_STANDBYNOW1) { - /* wait for io to complete if non atomic */ - if (mtip_quiesce_io(port, - MTIP_QUIESCE_IO_TIMEOUT_MS, atomic) < 0) { - dev_warn(&dd->pdev->dev, - "Failed to quiesce IO\n"); - mtip_put_int_command(dd, int_cmd); - clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); - wake_up_interruptible(&port->svc_wait); - return -EBUSY; - } + if (fis->command != ATA_CMD_STANDBYNOW1) { + /* wait for io to complete if non atomic */ + if (mtip_quiesce_io(port, + MTIP_QUIESCE_IO_TIMEOUT_MS, GFP_KERNEL) < 0) { + dev_warn(&dd->pdev->dev, "Failed to quiesce IO\n"); + mtip_put_int_command(dd, int_cmd); + clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); + wake_up_interruptible(&port->svc_wait); + return -EBUSY; } - - /* Set the completion function and data for the command. */ - int_cmd->comp_data = &wait; - int_cmd->comp_func = mtip_completion; - - } else { - /* Clear completion - we're going to poll */ - int_cmd->comp_data = NULL; - int_cmd->comp_func = mtip_null_completion; } + /* Set the completion function and data for the command. */ + int_cmd->comp_data = &wait; + int_cmd->comp_func = mtip_completion; + /* Copy the command to the command table */ memcpy(int_cmd->command, fis, fis_len*4); @@ -1198,81 +1184,41 @@ static int mtip_exec_internal_command(struct mtip_port *port, /* Issue the command to the hardware */ mtip_issue_non_ncq_command(port, MTIP_TAG_INTERNAL); - if (atomic == GFP_KERNEL) { - /* Wait for the command to complete or timeout. */ - if ((rv = wait_for_completion_interruptible_timeout( - &wait, - msecs_to_jiffies(timeout))) <= 0) { - - if (rv == -ERESTARTSYS) { /* interrupted */ - dev_err(&dd->pdev->dev, - "Internal command [%02X] was interrupted after %u ms\n", - fis->command, - jiffies_to_msecs(jiffies - start)); - rv = -EINTR; - goto exec_ic_exit; - } else if (rv == 0) /* timeout */ - dev_err(&dd->pdev->dev, - "Internal command did not complete [%02X] within timeout of %lu ms\n", - fis->command, timeout); - else - dev_err(&dd->pdev->dev, - "Internal command [%02X] wait returned code [%d] after %lu ms - unhandled\n", - fis->command, rv, timeout); - - if (mtip_check_surprise_removal(dd->pdev) || - test_bit(MTIP_DDF_REMOVE_PENDING_BIT, - &dd->dd_flag)) { - dev_err(&dd->pdev->dev, - "Internal command [%02X] wait returned due to SR\n", - fis->command); - rv = -ENXIO; - goto exec_ic_exit; - } - mtip_device_reset(dd); /* recover from timeout issue */ - rv = -EAGAIN; + /* Wait for the command to complete or timeout. */ + rv = wait_for_completion_interruptible_timeout(&wait, + msecs_to_jiffies(timeout)); + if (rv <= 0) { + if (rv == -ERESTARTSYS) { /* interrupted */ + dev_err(&dd->pdev->dev, + "Internal command [%02X] was interrupted after %u ms\n", + fis->command, + jiffies_to_msecs(jiffies - start)); + rv = -EINTR; goto exec_ic_exit; - } - } else { - u32 hba_stat, port_stat; - - /* Spin for checking if command still outstanding */ - timeout = jiffies + msecs_to_jiffies(timeout); - while ((readl(port->cmd_issue[MTIP_TAG_INTERNAL]) - & (1 << MTIP_TAG_INTERNAL)) - && time_before(jiffies, timeout)) { - if (mtip_check_surprise_removal(dd->pdev)) { - rv = -ENXIO; - goto exec_ic_exit; - } - if ((fis->command != ATA_CMD_STANDBYNOW1) && - test_bit(MTIP_DDF_REMOVE_PENDING_BIT, - &dd->dd_flag)) { - rv = -ENXIO; - goto exec_ic_exit; - } - port_stat = readl(port->mmio + PORT_IRQ_STAT); - if (!port_stat) - continue; + } else if (rv == 0) /* timeout */ + dev_err(&dd->pdev->dev, + "Internal command did not complete [%02X] within timeout of %lu ms\n", + fis->command, timeout); + else + dev_err(&dd->pdev->dev, + "Internal command [%02X] wait returned code [%d] after %lu ms - unhandled\n", + fis->command, rv, timeout); - if (port_stat & PORT_IRQ_ERR) { - dev_err(&dd->pdev->dev, - "Internal command [%02X] failed\n", - fis->command); - mtip_device_reset(dd); - rv = -EIO; - goto exec_ic_exit; - } else { - writel(port_stat, port->mmio + PORT_IRQ_STAT); - hba_stat = readl(dd->mmio + HOST_IRQ_STAT); - if (hba_stat) - writel(hba_stat, - dd->mmio + HOST_IRQ_STAT); - } - break; + if (mtip_check_surprise_removal(dd->pdev) || + test_bit(MTIP_DDF_REMOVE_PENDING_BIT, + &dd->dd_flag)) { + dev_err(&dd->pdev->dev, + "Internal command [%02X] wait returned due to SR\n", + fis->command); + rv = -ENXIO; + goto exec_ic_exit; } + mtip_device_reset(dd); /* recover from timeout issue */ + rv = -EAGAIN; + goto exec_ic_exit; } + rv = 0; if (readl(port->cmd_issue[MTIP_TAG_INTERNAL]) & (1 << MTIP_TAG_INTERNAL)) { rv = -ENXIO; @@ -1391,7 +1337,6 @@ static int mtip_get_identify(struct mtip_port *port, void __user *user_buffer) port->identify_dma, sizeof(u16) * ATA_ID_WORDS, 0, - GFP_KERNEL, MTIP_INT_CMD_TIMEOUT_MS) < 0) { rv = -1; @@ -1477,7 +1422,6 @@ static int mtip_standby_immediate(struct mtip_port *port) 0, 0, 0, - GFP_ATOMIC, timeout); dbg_printk(MTIP_DRV_NAME "Time taken to complete standby cmd: %d ms\n", jiffies_to_msecs(jiffies - start)); @@ -1523,7 +1467,6 @@ static int mtip_read_log_page(struct mtip_port *port, u8 page, u16 *buffer, buffer_dma, sectors * ATA_SECT_SIZE, 0, - GFP_ATOMIC, MTIP_INT_CMD_TIMEOUT_MS); } @@ -1558,7 +1501,6 @@ static int mtip_get_smart_data(struct mtip_port *port, u8 *buffer, buffer_dma, ATA_SECT_SIZE, 0, - GFP_ATOMIC, 15000); } @@ -1686,7 +1628,6 @@ static int mtip_send_trim(struct driver_data *dd, unsigned int lba, dma_addr, ATA_SECT_SIZE, 0, - GFP_KERNEL, MTIP_TRIM_TIMEOUT_MS) < 0) rv = -EIO; @@ -1850,7 +1791,6 @@ static int exec_drive_task(struct mtip_port *port, u8 *command) 0, 0, 0, - GFP_KERNEL, to) < 0) { return -1; } @@ -1946,7 +1886,6 @@ static int exec_drive_command(struct mtip_port *port, u8 *command, (xfer_sz ? dma_addr : 0), (xfer_sz ? ATA_SECT_SIZE * xfer_sz : 0), 0, - GFP_KERNEL, to) < 0) { rv = -EFAULT; @@ -2189,7 +2128,6 @@ static int exec_drive_taskfile(struct driver_data *dd, dma_buffer, transfer_size, 0, - GFP_KERNEL, timeout) < 0) { err = -EIO; goto abort; -- 2.39.2