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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 00:51:15 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 00:51:15 +0300
commitd87823813fe498fdd47894bd28e460a9dee8d771 (patch)
tree214eaf3babd0d61f08022fc1edd99a5128616548 /drivers/block/paride/pd.c
parente382608254e06c8109f40044f5e693f2e04f3899 (diff)
parent3dc196eae1db548f05e53e5875ff87b8ff79f249 (diff)
downloadlinux-d87823813fe498fdd47894bd28e460a9dee8d771.tar.xz
Merge tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver pull request for 4.2-rc1. Lots of mei, extcon, coresight, uio, mic, and other driver updates in here. Full details in the shortlog. All of these have been in linux-next for some time with no reported problems" * tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (176 commits) mei: me: wait for power gating exit confirmation mei: reset flow control on the last client disconnection MAINTAINERS: mei: add mei_cl_bus.h to maintained file list misc: sram: sort and clean up included headers misc: sram: move reserved block logic out of probe function misc: sram: add private struct device and virt_base members misc: sram: report correct SRAM pool size misc: sram: bump error message level on unclean driver unbinding misc: sram: fix device node reference leak on error misc: sram: fix enabled clock leak on error path misc: mic: Fix reported static checker warning misc: mic: Fix randconfig build error by including errno.h uio: pruss: Drop depends on ARCH_DAVINCI_DA850 from config uio: pruss: Add CONFIG_HAS_IOMEM dependence uio: pruss: Include <linux/sizes.h> extcon: Redefine the unique id of supported external connectors without 'enum extcon' type char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion parport: check exclusive access before register w1: use correct lock on error in w1_seq_show() ...
Diffstat (limited to 'drivers/block/paride/pd.c')
-rw-r--r--drivers/block/paride/pd.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index dbb4da1cdca8..b9242d78283d 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -247,6 +247,8 @@ static char *pd_errs[17] = { "ERR", "INDEX", "ECC", "DRQ", "SEEK", "WRERR",
"IDNF", "MC", "UNC", "???", "TMO"
};
+static void *par_drv; /* reference of parport driver */
+
static inline int status_reg(struct pd_unit *disk)
{
return pi_read_regr(disk->pi, 1, 6);
@@ -872,6 +874,12 @@ static int pd_detect(void)
pd_drive_count++;
}
+ par_drv = pi_register_driver(name);
+ if (!par_drv) {
+ pr_err("failed to register %s driver\n", name);
+ return -1;
+ }
+
if (pd_drive_count == 0) { /* nothing spec'd - so autoprobe for 1 */
disk = pd;
if (pi_init(disk->pi, 1, -1, -1, -1, -1, -1, pd_scratch,
@@ -902,8 +910,10 @@ static int pd_detect(void)
found = 1;
}
}
- if (!found)
+ if (!found) {
printk("%s: no valid drive found\n", name);
+ pi_unregister_driver(par_drv);
+ }
return found;
}