linux-kernel - Re: [PATCH next] PCI: brmstb: Fix type mismatch for num_inbound_wins in brcm_pcie

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Message-ID: <20240904170042.GA336896@bhelgaas>
Date: Wed, 4 Sep 2024 12:00:42 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Riyan Dhiman <riyandhiman14@...il.com>
Cc: jim2101024@...il.com, nsaenz@...nel.org, lorian.fainelli@...adcom.com,
	bcm-kernel-feedback-list@...adcom.com, bhelgaas@...gle.com,
	linux-pci@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH next] PCI: brmstb: Fix type mismatch for num_inbound_wins
 in brcm_pcie_setup()

On Wed, Sep 04, 2024 at 09:49:54PM +0530, Riyan Dhiman wrote:
> Change num_inbound_wins from u8 to int in brcm_pcie_setup() function to correctly 
> handle potential negative error codes returned by brcm_pcie_get_inbound_wins().
> The u8 type was inappropriate for capturing the function's return value,
> which can include error codes.
> 
> Signed-off-by: Riyan Dhiman <riyandhiman14@...il.com>

Apparently a fix for 46c981fd60de ("PCI: brcmstb: Refactor for chips
with many regular inbound windows"), which is currently queued on the 
pci/controller/brcmstb branch?

I agree, this looks good, and we should squash it into 46c981fd60de.

> ---
>  drivers/pci/controller/pcie-brcmstb.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
> index e8332fe5396e..b2859c4fd931 100644
> --- a/drivers/pci/controller/pcie-brcmstb.c
> +++ b/drivers/pci/controller/pcie-brcmstb.c
> @@ -1030,7 +1030,8 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
>  	struct pci_host_bridge *bridge;
>  	struct resource_entry *entry;
>  	u32 tmp, burst, aspm_support;
> -	u8 num_out_wins = 0, num_inbound_wins = 0;
> +	u8 num_out_wins = 0
> +	int num_inbound_wins = 0;
>  	int memc, ret;
>  
>  	/* Reset the bridge */
> -- 
> 2.46.0
>