From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/scsi/scsi_scan.c | 83 ++++++----------------------------------- 1 file changed, 12 insertions(+), 71 deletions(-) (limited to 'kernel/drivers/scsi/scsi_scan.c') diff --git a/kernel/drivers/scsi/scsi_scan.c b/kernel/drivers/scsi/scsi_scan.c index 6efab1c45..054923e33 100644 --- a/kernel/drivers/scsi/scsi_scan.c +++ b/kernel/drivers/scsi/scsi_scan.c @@ -55,6 +55,7 @@ * Default timeout */ #define SCSI_TIMEOUT (2*HZ) +#define SCSI_REPORT_LUNS_TIMEOUT (30*HZ) /* * Prefix values for the SCSI id's (stored in sysfs name field) @@ -274,13 +275,13 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, WARN_ON_ONCE(!blk_get_queue(sdev->request_queue)); sdev->request_queue->queuedata = sdev; - if (!shost_use_blk_mq(sdev->host) && - (shost->bqt || shost->hostt->use_blk_tags)) { + if (!shost_use_blk_mq(sdev->host)) { blk_queue_init_tags(sdev->request_queue, sdev->host->cmd_per_lun, shost->bqt, shost->hostt->tag_alloc_policy); } - scsi_change_queue_depth(sdev, sdev->host->cmd_per_lun); + scsi_change_queue_depth(sdev, sdev->host->cmd_per_lun ? + sdev->host->cmd_per_lun : 1); scsi_sysfs_device_initialize(sdev); @@ -700,9 +701,12 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, * strings. */ if (sdev->inquiry_len < 36) { - sdev_printk(KERN_INFO, sdev, - "scsi scan: INQUIRY result too short (%d)," - " using 36\n", sdev->inquiry_len); + if (!sdev->host->short_inquiry) { + shost_printk(KERN_INFO, sdev->host, + "scsi scan: INQUIRY result too short (%d)," + " using 36\n", sdev->inquiry_len); + sdev->host->short_inquiry = 1; + } sdev->inquiry_len = 36; } @@ -1268,68 +1272,6 @@ static void scsi_sequential_lun_scan(struct scsi_target *starget, return; } -/** - * scsilun_to_int - convert a scsi_lun to an int - * @scsilun: struct scsi_lun to be converted. - * - * Description: - * Convert @scsilun from a struct scsi_lun to a four byte host byte-ordered - * integer, and return the result. The caller must check for - * truncation before using this function. - * - * Notes: - * For a description of the LUN format, post SCSI-3 see the SCSI - * Architecture Model, for SCSI-3 see the SCSI Controller Commands. - * - * Given a struct scsi_lun of: d2 04 0b 03 00 00 00 00, this function - * returns the integer: 0x0b03d204 - * - * This encoding will return a standard integer LUN for LUNs smaller - * than 256, which typically use a single level LUN structure with - * addressing method 0. - **/ -u64 scsilun_to_int(struct scsi_lun *scsilun) -{ - int i; - u64 lun; - - lun = 0; - for (i = 0; i < sizeof(lun); i += 2) - lun = lun | (((u64)scsilun->scsi_lun[i] << ((i + 1) * 8)) | - ((u64)scsilun->scsi_lun[i + 1] << (i * 8))); - return lun; -} -EXPORT_SYMBOL(scsilun_to_int); - -/** - * int_to_scsilun - reverts an int into a scsi_lun - * @lun: integer to be reverted - * @scsilun: struct scsi_lun to be set. - * - * Description: - * Reverts the functionality of the scsilun_to_int, which packed - * an 8-byte lun value into an int. This routine unpacks the int - * back into the lun value. - * - * Notes: - * Given an integer : 0x0b03d204, this function returns a - * struct scsi_lun of: d2 04 0b 03 00 00 00 00 - * - **/ -void int_to_scsilun(u64 lun, struct scsi_lun *scsilun) -{ - int i; - - memset(scsilun->scsi_lun, 0, sizeof(scsilun->scsi_lun)); - - for (i = 0; i < sizeof(lun); i += 2) { - scsilun->scsi_lun[i] = (lun >> 8) & 0xFF; - scsilun->scsi_lun[i+1] = lun & 0xFF; - lun = lun >> 16; - } -} -EXPORT_SYMBOL(int_to_scsilun); - /** * scsi_report_lun_scan - Scan using SCSI REPORT LUN results * @starget: which target @@ -1444,7 +1386,7 @@ retry: result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE, lun_data, length, &sshdr, - SCSI_TIMEOUT + 4 * HZ, 3, NULL); + SCSI_REPORT_LUNS_TIMEOUT, 3, NULL); SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev, "scsi scan: REPORT LUNS" @@ -1773,8 +1715,7 @@ static struct async_scan_data *scsi_prep_async_scan(struct Scsi_Host *shost) return NULL; if (shost->async_scan) { - shost_printk(KERN_INFO, shost, "%s called twice\n", __func__); - dump_stack(); + shost_printk(KERN_DEBUG, shost, "%s called twice\n", __func__); return NULL; } -- cgit 1.2.3-korg