From mboxrd@z Thu Jan 1 00:00:00 1970 From: "K. Y. Srinivasan" Subject: [PATCH 020/117] Staging: hv: vmbus: Support the notion of id tables in vmbus_match() Date: Fri, 15 Jul 2011 10:46:08 -0700 Message-ID: <1310752065-27895-20-git-send-email-kys@microsoft.com> References: <1310752024-27854-1-git-send-email-kys@microsoft.com> <1310752065-27895-1-git-send-email-kys@microsoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1310752065-27895-1-git-send-email-kys@microsoft.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: devel-bounces@linuxdriverproject.org Errors-To: devel-bounces@linuxdriverproject.org To: gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: Haiyang Zhang List-Id: virtualization@lists.linuxfoundation.org Introduce code to handle driver specific id tables to the vmbus core (vmbus_match). This would allow us to handle more than one device type with a given driver. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang --- drivers/staging/hv/vmbus_drv.c | 21 ++++++++++++++++----- 1 files changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c index 7baba62..3a8eb36 100644 --- a/drivers/staging/hv/vmbus_drv.c +++ b/drivers/staging/hv/vmbus_drv.c @@ -255,21 +255,32 @@ static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) return ret; } +static bool is_not_null_guid(const __u8 *guid) +{ + int i; + + for (i = 0; i < (sizeof(struct hv_vmbus_device_id)); i++) + if (guid[i] != 0) + return true; + return false; +} + /* * vmbus_match - Attempt to match the specified device to the specified driver */ static int vmbus_match(struct device *device, struct device_driver *driver) { - int match = 0; struct hv_driver *drv = drv_to_hv_drv(driver); struct hv_device *hv_dev = device_to_hv_device(device); + const struct hv_vmbus_device_id *id_array = drv->id_table; - /* We found our driver ? */ - if (!uuid_le_cmp(hv_dev->dev_type, drv->dev_type)) - match = 1; + for (; is_not_null_guid(id_array->guid); id_array++) + if (!memcmp(&id_array->guid, &hv_dev->dev_type.b, + sizeof(struct hv_vmbus_device_id))) + return 1; - return match; + return 0; } /* -- 1.7.4.1