linux-kernel - Re: [PATCH v1 03/13] serial: 8250_exar: Kill CTI_PCI

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Date: Thu, 2 May 2024 11:13:14 -0400
From: Parker Newman <parker@...est.io>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Parker Newman <pnewman@...necttech.com>, linux-kernel@...r.kernel.org,
 linux-serial@...r.kernel.org, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH v1 03/13] serial: 8250_exar: Kill CTI_PCI_DEVICE()

On Thu,  2 May 2024 17:43:57 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> The CTI_PCI_DEVICE() duplicates EXAR_DEVICE(). Kill the former.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/tty/serial/8250/8250_exar.c | 19 +++++--------------
>  1 file changed, 5 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
> index 150c4abd92fc..ab0abc14ecf8 100644
> --- a/drivers/tty/serial/8250/8250_exar.c
> +++ b/drivers/tty/serial/8250/8250_exar.c
> @@ -1737,7 +1737,6 @@ static const struct exar8250_board pbn_exar_XR17V8358 = {
>  	.exit		= pci_xr17v35x_exit,
>  };
>
> -// For Connect Tech cards with Exar vendor/device PCI IDs
>  #define CTI_EXAR_DEVICE(devid, bd) {                    \
>  	PCI_DEVICE_SUB(                                 \
>  		PCI_VENDOR_ID_EXAR,                     \
> @@ -1747,16 +1746,6 @@ static const struct exar8250_board pbn_exar_XR17V8358 = {
>  		(kernel_ulong_t)&bd                     \
>  	}
>
> -// For Connect Tech cards with Connect Tech vendor/device PCI IDs (FPGA based)
> -#define CTI_PCI_DEVICE(devid, bd) {                     \
> -	PCI_DEVICE_SUB(                                 \
> -		PCI_VENDOR_ID_CONNECT_TECH,             \
> -		PCI_DEVICE_ID_CONNECT_TECH_PCI_##devid, \
> -		PCI_ANY_ID,                             \
> -		PCI_ANY_ID), 0, 0,                      \
> -		(kernel_ulong_t)&bd                     \
> -	}
> -
>  #define EXAR_DEVICE(vend, devid, bd) { PCI_DEVICE_DATA(vend, devid, &bd) }
>
This is not correct. The CTI_PCI_DEVICE() macro is for cards that have the
Connect Tech PCI Vendor ID (not Sub-Vendor ID). EXAR_DEVICE() is for cards with
Exar PCI Vendor ID.

Thanks,
Parker

>  #define IBM_DEVICE(devid, sdevid, bd) {			\
> @@ -1786,6 +1775,7 @@ static const struct pci_device_id exar_pci_tbl[] = {
>  	EXAR_DEVICE(ACCESSIO, COM_4SM, pbn_exar_XR17C15x),
>  	EXAR_DEVICE(ACCESSIO, COM_8SM, pbn_exar_XR17C15x),
>
> +	/* Connect Tech cards with Exar vendor/device PCI IDs */
>  	CTI_EXAR_DEVICE(XR17C152,       pbn_cti_xr17c15x),
>  	CTI_EXAR_DEVICE(XR17C154,       pbn_cti_xr17c15x),
>  	CTI_EXAR_DEVICE(XR17C158,       pbn_cti_xr17c15x),
> @@ -1798,9 +1788,10 @@ static const struct pci_device_id exar_pci_tbl[] = {
>  	CTI_EXAR_DEVICE(XR17V354,       pbn_cti_xr17v35x),
>  	CTI_EXAR_DEVICE(XR17V358,       pbn_cti_xr17v35x),
>
> -	CTI_PCI_DEVICE(XR79X_12_XIG00X, pbn_cti_fpga),
> -	CTI_PCI_DEVICE(XR79X_12_XIG01X, pbn_cti_fpga),
> -	CTI_PCI_DEVICE(XR79X_16,        pbn_cti_fpga),
> +	/* Connect Tech cards with Connect Tech vendor/device PCI IDs (FPGA based) */
> +	EXAR_DEVICE(CONNECT_TECH, PCI_XR79X_12_XIG00X, pbn_cti_fpga),
> +	EXAR_DEVICE(CONNECT_TECH, PCI_XR79X_12_XIG01X, pbn_cti_fpga),
> +	EXAR_DEVICE(CONNECT_TECH, PCI_XR79X_16,        pbn_cti_fpga),
>
>  	IBM_DEVICE(XR17C152, SATURN_SERIAL_ONE_PORT, pbn_exar_ibm_saturn),
>