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Message-ID: <d1885619-fc34-4b72-9538-34f1993a538a@intel.com>
Date: Fri, 18 Jul 2025 10:55:49 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Terry Bowman <terry.bowman@....com>, dave@...olabs.net,
jonathan.cameron@...wei.com, alison.schofield@...el.com,
dan.j.williams@...el.com, bhelgaas@...gle.com, shiju.jose@...wei.com,
ming.li@...omail.com, Smita.KoralahalliChannabasappa@....com,
rrichter@....com, dan.carpenter@...aro.org,
PradeepVineshReddy.Kodamati@....com, lukas@...ner.de,
Benjamin.Cheatham@....com, sathyanarayanan.kuppuswamy@...ux.intel.com,
linux-cxl@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v10 01/17] cxl/pci: Remove unnecessary CXL Endpoint
handling helper functions
On 6/26/25 3:42 PM, Terry Bowman wrote:
> The CXL driver's cxl_handle_endpoint_cor_ras()/cxl_handle_endpoint_ras()
> are unnecessary helper functions used only for Endpoints. Remove these
> functions as they are not common for all CXL devices and do not provide
> value for EP handling.
>
> Rename __cxl_handle_ras to cxl_handle_ras() and __cxl_handle_cor_ras()
> to cxl_handle_cor_ras().
>
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>
> ---
> drivers/cxl/core/pci.c | 26 ++++++++------------------
> 1 file changed, 8 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c
> index b50551601c2e..06464a25d8bd 100644
> --- a/drivers/cxl/core/pci.c
> +++ b/drivers/cxl/core/pci.c
> @@ -664,8 +664,8 @@ void read_cdat_data(struct cxl_port *port)
> }
> EXPORT_SYMBOL_NS_GPL(read_cdat_data, "CXL");
>
> -static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
> - void __iomem *ras_base)
> +static void cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
> + void __iomem *ras_base)
> {
> void __iomem *addr;
> u32 status;
> @@ -681,11 +681,6 @@ static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
> }
> }
>
> -static void cxl_handle_endpoint_cor_ras(struct cxl_dev_state *cxlds)
> -{
> - return __cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
> -}
> -
> /* CXL spec rev3.0 8.2.4.16.1 */
> static void header_log_copy(void __iomem *ras_base, u32 *log)
> {
> @@ -707,8 +702,8 @@ static void header_log_copy(void __iomem *ras_base, u32 *log)
> * Log the state of the RAS status registers and prepare them to log the
> * next error status. Return 1 if reset needed.
> */
> -static bool __cxl_handle_ras(struct cxl_dev_state *cxlds,
> - void __iomem *ras_base)
> +static bool cxl_handle_ras(struct cxl_dev_state *cxlds,
> + void __iomem *ras_base)
> {
> u32 hl[CXL_HEADERLOG_SIZE_U32];
> void __iomem *addr;
> @@ -741,11 +736,6 @@ static bool __cxl_handle_ras(struct cxl_dev_state *cxlds,
> return true;
> }
>
> -static bool cxl_handle_endpoint_ras(struct cxl_dev_state *cxlds)
> -{
> - return __cxl_handle_ras(cxlds, cxlds->regs.ras);
> -}
> -
> #ifdef CONFIG_PCIEAER_CXL
>
> static void cxl_dport_map_rch_aer(struct cxl_dport *dport)
> @@ -824,13 +814,13 @@ EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL");
> static void cxl_handle_rdport_cor_ras(struct cxl_dev_state *cxlds,
> struct cxl_dport *dport)
> {
> - return __cxl_handle_cor_ras(cxlds, dport->regs.ras);
> + return cxl_handle_cor_ras(cxlds, dport->regs.ras);
> }
>
> static bool cxl_handle_rdport_ras(struct cxl_dev_state *cxlds,
> struct cxl_dport *dport)
> {
> - return __cxl_handle_ras(cxlds, dport->regs.ras);
> + return cxl_handle_ras(cxlds, dport->regs.ras);
> }
>
> /*
> @@ -927,7 +917,7 @@ void cxl_cor_error_detected(struct pci_dev *pdev)
> if (cxlds->rcd)
> cxl_handle_rdport_errors(cxlds);
>
> - cxl_handle_endpoint_cor_ras(cxlds);
> + cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
> }
> }
> EXPORT_SYMBOL_NS_GPL(cxl_cor_error_detected, "CXL");
> @@ -956,7 +946,7 @@ pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
> * chance the situation is recoverable dump the status of the RAS
> * capability registers and bounce the active state of the memdev.
> */
> - ue = cxl_handle_endpoint_ras(cxlds);
> + ue = cxl_handle_ras(cxlds, cxlds->regs.ras);
> }
>
>
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