From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933433AbcDEPpS (ORCPT ); Tue, 5 Apr 2016 11:45:18 -0400 Received: from p3plsmtps2ded03.prod.phx3.secureserver.net ([208.109.80.60]:56430 "EHLO p3plsmtps2ded03.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933306AbcDEPpN (ORCPT ); Tue, 5 Apr 2016 11:45:13 -0400 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 2/7] drivers:hv: Make a function to free mmio regions through vmbus Date: Tue, 5 Apr 2016 10:22:51 -0700 Message-Id: <1459876976-15860-2-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1459876976-15860-1-git-send-email-kys@microsoft.com> References: <1459876777-15772-1-git-send-email-kys@microsoft.com> <1459876976-15860-1-git-send-email-kys@microsoft.com> X-CMAE-Envelope: MS4wfD5/CM6DV/geoiso32z4ToYt/1UQ1Dkt5TKRyLy0rrgsALos24nubS/YeDSw5N0YTy58SfJZAUsN8hfLXoVoyaW+Cg7pLaZpSmtw7KA0J/Glo47yNL1l R6Uh8QzwinCU2oNEfXfiNX7AkCnK3V7f8sqK+N3ha6w2uWM7tiilan8wn17rQ2INTFZ0PfF+5J4pvSjs6lN0m3AGBFPsh1sFjqzoQ1uez2i1o6ucc5EiEdWh 0JAK7+vmN5l8VZGExpQ2u70j464o5D9yqkMoj813ZQ8nIJk/IaXS3D1Ju/QnSNvWF8JeXCP7Hqy84m1kOrGBZuwvqdXXEzxBqiGB0f4Es8cD3Ir6gBSLcrUA Qp5AIc4YhLJ9nR5o7teki5EWuVImuwh4f8CensaiCuogTL/DPxdViHJxcQSqgNYoTRUTDaAcZg41cc87+7id+D7YqreKlg== 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 --- Greg, please apply this to the 4.6 tree. 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 799518b..60553c1 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1188,6 +1188,21 @@ exit: 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