From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Auger Subject: [PATCH 2/4] vfio: platform: reset: calxedaxgmac: add reset function registration Date: Sun, 18 Oct 2015 18:00:13 +0200 Message-ID: <1445184015-24414-3-git-send-email-eric.auger@linaro.org> References: <1445184015-24414-1-git-send-email-eric.auger@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, patches@linaro.org To: eric.auger@st.com, eric.auger@linaro.org, alex.williamson@redhat.com, b.reynal@virtualopensystems.com, arnd@arndb.de, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: In-Reply-To: <1445184015-24414-1-git-send-email-eric.auger@linaro.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org This patch adds the reset function registration/unregistration. Also a MODULE_ALIAS is added. Signed-off-by: Eric Auger --- .../platform/reset/vfio_platform_calxedaxgmac.c | 40 ++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c b/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c index 619dc7d..4f76b17 100644 --- a/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c +++ b/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c @@ -29,8 +29,7 @@ #define DRIVER_VERSION "0.1" #define DRIVER_AUTHOR "Eric Auger " #define DRIVER_DESC "Reset support for Calxeda xgmac vfio platform device" - -#define CALXEDAXGMAC_COMPAT "calxeda,hb-xgmac" +#define COMPAT "calxeda,hb-xgmac" /* XGMAC Register definitions */ #define XGMAC_CONTROL 0x00000000 /* MAC Configuration */ @@ -80,6 +79,43 @@ int vfio_platform_calxedaxgmac_reset(struct vfio_platform_device *vdev) } EXPORT_SYMBOL_GPL(vfio_platform_calxedaxgmac_reset); +static int __init vfio_platform_calxedaxgmac_init(void) +{ + int (*register_reset)(struct module *, char*, + vfio_platform_reset_fn_t); + int ret; + + register_reset = symbol_get(vfio_platform_register_reset); + if (!register_reset) + return -EINVAL; + + ret = register_reset(THIS_MODULE, COMPAT, + vfio_platform_calxedaxgmac_reset); + + symbol_put(vfio_platform_register_reset); + + return ret; +} + +static void __exit vfio_platform_calxedaxgmac_exit(void) +{ + int (*unregister_reset)(char *); + int ret; + + unregister_reset = symbol_get(vfio_platform_unregister_reset); + if (!unregister_reset) + return; + + ret = unregister_reset(COMPAT); + + symbol_put(vfio_platform_unregister_reset); +} + +module_init(vfio_platform_calxedaxgmac_init); +module_exit(vfio_platform_calxedaxgmac_exit); + +MODULE_ALIAS("vfio-reset:" COMPAT); + MODULE_VERSION(DRIVER_VERSION); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR(DRIVER_AUTHOR); -- 1.9.1