From: Manivannan Sadhasivam Date: Mon, 27 Nov 2023 10:18:54 +0000 (+0530) Subject: PCI: epf-mhi: Simulate async read/write using iATU X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5424be958b446601d6176396d9dbaad2178db610;p=linux.git PCI: epf-mhi: Simulate async read/write using iATU Even though iATU only supports synchronous read/write, the MHI stack may call async read/write callbacks without knowing the limitations of the controller driver. So in order to maintain compatibility, let's simulate async read/write operation with iATU by invoking the completion callback after memcpy. Acked-by: Bjorn Helgaas Reviewed-by: Krzysztof Wilczyński Signed-off-by: Manivannan Sadhasivam --- diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c index 2c5b627eb5ee6..d9f45822e6705 100644 --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c @@ -234,6 +234,9 @@ static int pci_epf_mhi_iatu_read(struct mhi_ep_cntrl *mhi_cntrl, mutex_unlock(&epf_mhi->lock); + if (buf_info->cb) + buf_info->cb(buf_info); + return 0; } @@ -262,6 +265,9 @@ static int pci_epf_mhi_iatu_write(struct mhi_ep_cntrl *mhi_cntrl, mutex_unlock(&epf_mhi->lock); + if (buf_info->cb) + buf_info->cb(buf_info); + return 0; }