lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sun, 19 Oct 2014 18:00:02 +0200 From: Christoph Hellwig <hch@....de> To: Chandra Seetharaman <sekharan@...ibm.com>, Hannes Reinecke <hare@...e.de>, Mike Christie <michaelc@...wisc.edu> Cc: Sean Stewart <Sean.Stewart@...app.com>, Bart Van Assche <bvanassche@....org>, linux-kernel@...r.kernel.org Subject: [PATCH 4/6] scsi: device handlers must have attach and detach methods Signed-off-by: Christoph Hellwig <hch@....de> --- drivers/scsi/device_handler/scsi_dh.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/device_handler/scsi_dh.c b/drivers/scsi/device_handler/scsi_dh.c index 1a8dbf3..d8a8aac 100644 --- a/drivers/scsi/device_handler/scsi_dh.c +++ b/drivers/scsi/device_handler/scsi_dh.c @@ -108,19 +108,17 @@ static int scsi_dh_handler_attach(struct scsi_device *sdev, return 0; } - if (scsi_dh->attach) { - if (!try_module_get(scsi_dh->module)) - return -EINVAL; - - err = scsi_dh->attach(sdev); - if (err) { - module_put(scsi_dh->module); - return err; - } + if (!try_module_get(scsi_dh->module)) + return -EINVAL; - kref_init(&sdev->scsi_dh_data->kref); - sdev->scsi_dh_data->sdev = sdev; + err = scsi_dh->attach(sdev); + if (err) { + module_put(scsi_dh->module); + return err; } + + kref_init(&sdev->scsi_dh_data->kref); + sdev->scsi_dh_data->sdev = sdev; return err; } @@ -154,7 +152,7 @@ static void scsi_dh_handler_detach(struct scsi_device *sdev, if (!scsi_dh) scsi_dh = sdev->scsi_dh_data->scsi_dh; - if (scsi_dh && scsi_dh->detach) + if (scsi_dh) kref_put(&sdev->scsi_dh_data->kref, __detach_handler); } @@ -343,6 +341,9 @@ int scsi_register_device_handler(struct scsi_device_handler *scsi_dh) if (get_device_handler(scsi_dh->name)) return -EBUSY; + if (!scsi_dh->attach || !scsi_dh->detach) + return -EINVAL; + spin_lock(&list_lock); list_add(&scsi_dh->list, &scsi_dh_list); spin_unlock(&list_lock); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists