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| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2009-09-17 13:47:29 -0500 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-10-01 21:15:42 +0200 |
| commit | 361e9b07d11cfc8b77921a0e96910019402efe79 (patch) | |
| tree | abaf13edbd4e7117a1f64a84119e2e4a8e1314cd | |
| parent | e8074f79770953be26b64539803d06a46d1a6e58 (diff) | |
| download | kernel_samsung_smdk4412-361e9b07d11cfc8b77921a0e96910019402efe79.zip kernel_samsung_smdk4412-361e9b07d11cfc8b77921a0e96910019402efe79.tar.gz kernel_samsung_smdk4412-361e9b07d11cfc8b77921a0e96910019402efe79.tar.bz2 | |
cciss: Handle cases when cciss_add_disk fails.
Handle cases when cciss_add_disk fails.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | drivers/block/cciss.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index b1211d530..ced71b0 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -200,6 +200,7 @@ static int scan_thread(void *data); static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); static void cciss_hba_release(struct device *dev); static void cciss_device_release(struct device *dev); +static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); #ifdef CONFIG_PROC_FS static void cciss_procinit(int i); @@ -1856,8 +1857,14 @@ static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) * (raid_leve == -1) then we want to update the * logical drive's information. */ - if (drv_index || first_time) - cciss_add_disk(h, disk, drv_index); + if (drv_index || first_time) { + if (cciss_add_disk(h, disk, drv_index) != 0) { + cciss_free_gendisk(h, drv_index); + printk(KERN_WARNING "cciss:%d could not update " + "disk %d\n", h->ctlr, drv_index); + --h->num_luns; + } + } freeret: kfree(inq_buff); @@ -1891,6 +1898,12 @@ static int cciss_find_free_drive_index(int ctlr, int controller_node) return -1; } +static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) +{ + put_disk(h->gendisk[drv_index]); + h->gendisk[drv_index] = NULL; +} + /* cciss_add_gendisk finds a free hba[]->drv structure * and allocates a gendisk if needed, and sets the lunid * in the drvinfo structure. It returns the index into @@ -1931,8 +1944,7 @@ static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) return drv_index; err_free_disk: - put_disk(h->gendisk[drv_index]); - h->gendisk[drv_index] = NULL; + cciss_free_gendisk(h, drv_index); return -1; } @@ -1950,11 +1962,8 @@ static void cciss_add_controller_node(ctlr_info_t *h) return; drv_index = cciss_add_gendisk(h, 0, 1); - if (drv_index == -1) { - printk(KERN_WARNING "cciss%d: could not " - "add disk 0.\n", h->ctlr); - return; - } + if (drv_index == -1) + goto error; h->drv[drv_index].block_size = 512; h->drv[drv_index].nr_blocks = 0; h->drv[drv_index].heads = 0; @@ -1963,7 +1972,13 @@ static void cciss_add_controller_node(ctlr_info_t *h) h->drv[drv_index].raid_level = -1; memset(h->drv[drv_index].serial_no, 0, 16); disk = h->gendisk[drv_index]; - cciss_add_disk(h, disk, drv_index); + if (cciss_add_disk(h, disk, drv_index) == 0) + return; + cciss_free_gendisk(h, drv_index); +error: + printk(KERN_WARNING "cciss%d: could not " + "add disk 0.\n", h->ctlr); + return; } /* This function will add and remove logical drives from the Logical |