linux-kernel - [PATCH v2 16/23] ata: ahci: Convert __ahci_port

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Date:   Tue, 3 May 2022 23:09:31 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Rob Herring <robh+dt@...nel.org>, <linux-ide@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v2 16/23] ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments

It may get required to retrieve the port-base address even before the
ata_host instance is initialized and activated, for instance in the
ahci_save_initial_config() method which we about to update (consider this
modification as a preparation for that one). Seeing the __ahci_port_base()
function isn't used much it's the best candidate to provide the required
functionality. So let's convert it to accepting the ahci_host_priv
structure pointer.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 drivers/ata/ahci.c | 2 +-
 drivers/ata/ahci.h | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9bc8fa77e92f..d14d74649e0e 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -689,7 +689,7 @@ static void ahci_pci_init_controller(struct ata_host *host)
 			mv = 2;
 		else
 			mv = 4;
-		port_mmio = __ahci_port_base(host, mv);
+		port_mmio = __ahci_port_base(hpriv, mv);
 
 		writel(0, port_mmio + PORT_IRQ_MASK);
 
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 0e66446a5883..8b9826533ae5 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -431,10 +431,9 @@ int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht);
 void ahci_error_handler(struct ata_port *ap);
 u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked);
 
-static inline void __iomem *__ahci_port_base(struct ata_host *host,
+static inline void __iomem *__ahci_port_base(struct ahci_host_priv *hpriv,
 					     unsigned int port_no)
 {
-	struct ahci_host_priv *hpriv = host->private_data;
 	void __iomem *mmio = hpriv->mmio;
 
 	return mmio + 0x100 + (port_no * 0x80);
@@ -442,7 +441,9 @@ static inline void __iomem *__ahci_port_base(struct ata_host *host,
 
 static inline void __iomem *ahci_port_base(struct ata_port *ap)
 {
-	return __ahci_port_base(ap->host, ap->port_no);
+	struct ahci_host_priv *hpriv = ap->host->private_data;
+
+	return __ahci_port_base(hpriv, ap->port_no);
 }
 
 static inline int ahci_nr_ports(u32 cap)
-- 
2.35.1