linux-kernel - [PATCH v3 03/10] PCI: Update xxx_pcie_ep_raise_irq() and pci_epc_raise

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Message-Id: <b4eba65e4ae7b8d15a5770a31d6a339de518cea7.1527862777.git.gustavo.pimentel@synopsys.com>
Date:   Fri,  8 Jun 2018 09:19:19 +0100
From:   Gustavo Pimentel <gustavo.pimentel@...opsys.com>
To:     bhelgaas@...gle.com, lorenzo.pieralisi@....com,
        Joao.Pinto@...opsys.com, jingoohan1@...il.com, kishon@...com,
        adouglas@...ence.com, jesper.nilsson@...s.com
Cc:     linux-pci@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>
Subject: [PATCH v3 03/10] PCI: Update xxx_pcie_ep_raise_irq() and pci_epc_raise_irq() signatures

Change {cdns, dra7xx, artpec6}_pcie_ep_raise_irq() and pci_epc_raise_irq()
signature, namely the interrupt_num variable type from u8 to u16 to
accommodate 2048 maximum MSI-X interrupts.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>
Acked-by: Alan Douglas <adouglas@...ence.com>
---
Change v1->v2:
 - Nothing changed, just to follow the patch set version.
Change v2->v3:
 - Move into here the pci_epc_raise_irq() signature change from patch
file #1.
 - Move into here the {dra7xx, artpec6}_pcie_ep_raise_irq() signature
changes from patch file #2.

 drivers/pci/cadence/pcie-cadence-ep.c | 3 ++-
 drivers/pci/dwc/pci-dra7xx.c          | 2 +-
 drivers/pci/dwc/pcie-artpec6.c        | 2 +-
 drivers/pci/endpoint/pci-epc-core.c   | 8 ++++----
 include/linux/pci-epc.h               | 6 +++---
 5 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c
index 3d8283e..6b713ca 100644
--- a/drivers/pci/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/cadence/pcie-cadence-ep.c
@@ -363,7 +363,8 @@ static int cdns_pcie_ep_send_msi_irq(struct cdns_pcie_ep *ep, u8 fn,
 }
 
 static int cdns_pcie_ep_raise_irq(struct pci_epc *epc, u8 fn,
-				  enum pci_epc_irq_type type, u8 interrupt_num)
+				  enum pci_epc_irq_type type,
+				  u16 interrupt_num)
 {
 	struct cdns_pcie_ep *ep = epc_get_drvdata(epc);
 
diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
index f688204..bdf948b 100644
--- a/drivers/pci/dwc/pci-dra7xx.c
+++ b/drivers/pci/dwc/pci-dra7xx.c
@@ -370,7 +370,7 @@ static void dra7xx_pcie_raise_msi_irq(struct dra7xx_pcie *dra7xx,
 }
 
 static int dra7xx_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				 enum pci_epc_irq_type type, u8 interrupt_num)
+				 enum pci_epc_irq_type type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);
diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c
index 321b56c..9a2474b 100644
--- a/drivers/pci/dwc/pcie-artpec6.c
+++ b/drivers/pci/dwc/pcie-artpec6.c
@@ -428,7 +428,7 @@ static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int artpec6_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				  enum pci_epc_irq_type type, u8 interrupt_num)
+				  enum pci_epc_irq_type type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 7d77bd0..c72e656 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -131,13 +131,13 @@ EXPORT_SYMBOL_GPL(pci_epc_start);
  * pci_epc_raise_irq() - interrupt the host system
  * @epc: the EPC device which has to interrupt the host
  * @func_no: the endpoint function number in the EPC device
- * @type: specify the type of interrupt; legacy or MSI
- * @interrupt_num: the MSI interrupt number
+ * @type: specify the type of interrupt; legacy, MSI or MSI-X
+ * @interrupt_num: the MSI or MSI-X interrupt number
  *
- * Invoke to raise an MSI or legacy interrupt
+ * Invoke to raise an legacy, MSI or MSI-X interrupt
  */
 int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no,
-		      enum pci_epc_irq_type type, u8 interrupt_num)
+		      enum pci_epc_irq_type type, u16 interrupt_num)
 {
 	int ret;
 	unsigned long flags;
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index 89f079f..bb2395b 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -35,7 +35,7 @@ enum pci_epc_irq_type {
  *	     MSI-X capability register
  * @get_msix: ops to get the number of MSI-X interrupts allocated by the RC
  *	     from the MSI-X capability register
- * @raise_irq: ops to raise a legacy or MSI interrupt
+ * @raise_irq: ops to raise a legacy, MSI or MSI-X interrupt
  * @start: ops to start the PCI link
  * @stop: ops to stop the PCI link
  * @owner: the module owner containing the ops
@@ -56,7 +56,7 @@ struct pci_epc_ops {
 	int	(*set_msix)(struct pci_epc *epc, u8 func_no, u16 interrupts);
 	int	(*get_msix)(struct pci_epc *epc, u8 func_no);
 	int	(*raise_irq)(struct pci_epc *epc, u8 func_no,
-			     enum pci_epc_irq_type type, u8 interrupt_num);
+			     enum pci_epc_irq_type type, u16 interrupt_num);
 	int	(*start)(struct pci_epc *epc);
 	void	(*stop)(struct pci_epc *epc);
 	struct module *owner;
@@ -154,7 +154,7 @@ int pci_epc_get_msi(struct pci_epc *epc, u8 func_no);
 int pci_epc_set_msix(struct pci_epc *epc, u8 func_no, u16 interrupts);
 int pci_epc_get_msix(struct pci_epc *epc, u8 func_no);
 int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no,
-		      enum pci_epc_irq_type type, u8 interrupt_num);
+		      enum pci_epc_irq_type type, u16 interrupt_num);
 int pci_epc_start(struct pci_epc *epc);
 void pci_epc_stop(struct pci_epc *epc);
 struct pci_epc *pci_epc_get(const char *epc_name);
-- 
2.7.4