From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934135AbcCIT5M (ORCPT ); Wed, 9 Mar 2016 14:57:12 -0500 Received: from p3plsmtps2ded03.prod.phx3.secureserver.net ([208.109.80.60]:54456 "EHLO p3plsmtps2ded03.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934022AbcCIT4Y (ORCPT ); Wed, 9 Mar 2016 14:56:24 -0500 x-originating-ip: 72.167.245.219 From: "K. Y. Srinivasan" To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com Cc: Jake Oshins , "K. Y. Srinivasan" Subject: [PATCH 2/6] hv: Make a function to free mmio regions through vmbus Date: Wed, 9 Mar 2016 13:35:21 -0800 Message-Id: <1457559325-10406-2-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1457559325-10406-1-git-send-email-kys@microsoft.com> References: <1457559302-10365-1-git-send-email-kys@microsoft.com> <1457559325-10406-1-git-send-email-kys@microsoft.com> X-CMAE-Envelope: MS4wfL2Gjtodiez50HGPdiKxo9uupD2+OUoeAUa2DjmrYxUorRDyDN4H5SEQg+2hoQMQ3xMCjxJjNkLMh0ocKpUGdcsSusgV7zoMYympwagIZo3BoayoKTpH o9sAVOvZ7pqvR5DuaI3A9C23wpT4rrdNd4Ey8UMTkt3PfnPaBqUqu+3+EH4zz18vgRbPu4/3pBMGYOarEX22Ux+UI+M+fOZWrauvKy0sJYhtLUvIHUi8mv7w de3R8Gz9SwjuM/H94D2hwL+r263FXxye1juZqCgyupfJ3yuJTxZj0hTIWoxNqoWM/ARqFCO0gmWgW2IfaBGzDU6uFRIyZENhHNBkMgwTl8YMHg89suIYtgIa Pyy4eY7Qqv6wLaBRfG9RdXdIFru9v/hllXJ4STykyBXo/2Znj/dA+BdGha9RD0YGFyuye12p2B70RweiNaAkw/L+dPcssg== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jake Oshins This patch introduces a function that reverses everything done by vmbus_allocate_mmio(). Existing code just called release_mem_region(). Future patches in this series require a more complex sequence of actions, so this function is introduced to wrap those actions. Signed-off-by: Jake Oshins Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c | 15 +++++++++++++++ include/linux/hyperv.h | 2 +- 2 files changed, 16 insertions(+), 1 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 64713ff..44e95a4 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1180,6 +1180,21 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, EXPORT_SYMBOL_GPL(vmbus_allocate_mmio); /** + * vmbus_free_mmio() - Free a memory-mapped I/O range. + * @start: Base address of region to release. + * @size: Size of the range to be allocated + * + * This function releases anything requested by + * vmbus_mmio_allocate(). + */ +void vmbus_free_mmio(resource_size_t start, resource_size_t size) +{ + release_mem_region(start, size); + +} +EXPORT_SYMBOL_GPL(vmbus_free_mmio); + +/** * vmbus_cpu_number_to_vp_number() - Map CPU to VP. * @cpu_number: CPU number in Linux terms * diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index aa0fadc..ecd81c3 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1091,7 +1091,7 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, resource_size_t min, resource_size_t max, resource_size_t size, resource_size_t align, bool fb_overlap_ok); - +void vmbus_free_mmio(resource_size_t start, resource_size_t size); int vmbus_cpu_number_to_vp_number(int cpu_number); u64 hv_do_hypercall(u64 control, void *input, void *output); -- 1.7.4.1