linux-kernel - Re: [PATCH v3] PCI: shpchp: Remove hpc

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Message-ID: <20240802000852.GA129961@bhelgaas>
Date: Thu, 1 Aug 2024 19:08:52 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: ngn <ngn@....tf>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Nam Cao <namcao@...utronix.de>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] PCI: shpchp: Remove hpc_ops

On Tue, Jul 23, 2024 at 02:43:25PM +0300, ngn wrote:
> Remove the hpc_ops struct from shpchp. This struct is unnecessary as
> no other hotplug controller implements it. A similar thing has already
> been done in pciehp with commit 82a9e79ef132 ("PCI: pciehp: remove hpc_ops")

> +++ b/drivers/pci/hotplug/shpchp_hpc.c
> @@ -167,7 +167,6 @@
>  
>  static irqreturn_t shpc_isr(int irq, void *dev_id);
>  static void start_int_poll_timer(struct controller *ctrl, int sec);
> -static int hpc_check_cmd_status(struct controller *ctrl);
>  
>  static inline u8 shpc_readb(struct controller *ctrl, int reg)
>  {
> @@ -317,7 +316,7 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
>  	if (retval)
>  		goto out;
>  
> -	cmd_status = hpc_check_cmd_status(slot->ctrl);
> +	cmd_status = shpchp_check_cmd_status(slot->ctrl);

This rename looks like it should be a separate patch because it's not
part of removing hpc_ops.

>  	if (cmd_status) {
>  		ctrl_err(ctrl, "Failed to issued command 0x%x (error code = %d)\n",
>  			 cmd, cmd_status);
> @@ -328,7 +327,7 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
>  	return retval;
>  }
>  
> -static int hpc_check_cmd_status(struct controller *ctrl)
> +int shpchp_check_cmd_status(struct controller *ctrl)
>  {
>  	int retval = 0;
>  	u16 cmd_status = shpc_readw(ctrl, CMD_STATUS) & 0x000F;