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Re: [PATCH 16/22] dvb-usb: Replace comments with C99 initializers

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On 3/26/22 14:51, Joe Perches wrote:
On Sat, 2022-03-26 at 19:27 +0100, Mauro Carvalho Chehab wrote:
Em Sat, 26 Mar 2022 19:24:54 +0100
Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> escreveu:

Em Sat, 26 Mar 2022 17:59:03 +0100
Benjamin Stürz <benni@xxxxxxxxxx> escreveu:

This replaces comments with C99's designated
initializers because the kernel supports them now.

Signed-off-by: Benjamin Stürz <benni@xxxxxxxxxx>
---
  drivers/media/usb/dvb-usb/dibusb-mb.c | 62 +++++++++++++--------------
  drivers/media/usb/dvb-usb/dibusb-mc.c | 34 +++++++--------
  2 files changed, 48 insertions(+), 48 deletions(-)

diff --git a/drivers/media/usb/dvb-usb/dibusb-mb.c b/drivers/media/usb/dvb-usb/dibusb-mb.c
index e9dc27f73970..f188e07f518b 100644
--- a/drivers/media/usb/dvb-usb/dibusb-mb.c
+++ b/drivers/media/usb/dvb-usb/dibusb-mb.c
@@ -122,40 +122,40 @@ static int dibusb_probe(struct usb_interface *intf,
/* do not change the order of the ID table */
  static struct usb_device_id dibusb_dib3000mb_table [] = {
-/* 00 */	{ USB_DEVICE(USB_VID_WIDEVIEW,		USB_PID_AVERMEDIA_DVBT_USB_COLD) },
-/* 01 */	{ USB_DEVICE(USB_VID_WIDEVIEW,		USB_PID_AVERMEDIA_DVBT_USB_WARM) },
-/* 02 */	{ USB_DEVICE(USB_VID_COMPRO,		USB_PID_COMPRO_DVBU2000_COLD) },
-/* 03 */	{ USB_DEVICE(USB_VID_COMPRO,		USB_PID_COMPRO_DVBU2000_WARM) },
-/* 04 */	{ USB_DEVICE(USB_VID_COMPRO_UNK,	USB_PID_COMPRO_DVBU2000_UNK_COLD) },
-/* 05 */	{ USB_DEVICE(USB_VID_DIBCOM,		USB_PID_DIBCOM_MOD3000_COLD) },
-/* 06 */	{ USB_DEVICE(USB_VID_DIBCOM,		USB_PID_DIBCOM_MOD3000_WARM) },
-/* 07 */	{ USB_DEVICE(USB_VID_EMPIA,		USB_PID_KWORLD_VSTREAM_COLD) },
-/* 08 */	{ USB_DEVICE(USB_VID_EMPIA,		USB_PID_KWORLD_VSTREAM_WARM) },
-/* 09 */	{ USB_DEVICE(USB_VID_GRANDTEC,		USB_PID_GRANDTEC_DVBT_USB_COLD) },
-/* 10 */	{ USB_DEVICE(USB_VID_GRANDTEC,		USB_PID_GRANDTEC_DVBT_USB_WARM) },
-/* 11 */	{ USB_DEVICE(USB_VID_GRANDTEC,		USB_PID_DIBCOM_MOD3000_COLD) },
-/* 12 */	{ USB_DEVICE(USB_VID_GRANDTEC,		USB_PID_DIBCOM_MOD3000_WARM) },
-/* 13 */	{ USB_DEVICE(USB_VID_HYPER_PALTEK,	USB_PID_UNK_HYPER_PALTEK_COLD) },
-/* 14 */	{ USB_DEVICE(USB_VID_HYPER_PALTEK,	USB_PID_UNK_HYPER_PALTEK_WARM) },
-/* 15 */	{ USB_DEVICE(USB_VID_VISIONPLUS,	USB_PID_TWINHAN_VP7041_COLD) },
-/* 16 */	{ USB_DEVICE(USB_VID_VISIONPLUS,	USB_PID_TWINHAN_VP7041_WARM) },
-/* 17 */	{ USB_DEVICE(USB_VID_TWINHAN,		USB_PID_TWINHAN_VP7041_COLD) },
-/* 18 */	{ USB_DEVICE(USB_VID_TWINHAN,		USB_PID_TWINHAN_VP7041_WARM) },
-/* 19 */	{ USB_DEVICE(USB_VID_ULTIMA_ELECTRONIC,	USB_PID_ULTIMA_TVBOX_COLD) },
-/* 20 */	{ USB_DEVICE(USB_VID_ULTIMA_ELECTRONIC,	USB_PID_ULTIMA_TVBOX_WARM) },
-/* 21 */	{ USB_DEVICE(USB_VID_ULTIMA_ELECTRONIC,	USB_PID_ULTIMA_TVBOX_AN2235_COLD) },
-/* 22 */	{ USB_DEVICE(USB_VID_ULTIMA_ELECTRONIC,	USB_PID_ULTIMA_TVBOX_AN2235_WARM) },
-/* 23 */	{ USB_DEVICE(USB_VID_ADSTECH,		USB_PID_ADSTECH_USB2_COLD) },
+[0]  =	{ USB_DEVICE(USB_VID_WIDEVIEW,		USB_PID_AVERMEDIA_DVBT_USB_COLD) },
+[1]  =	{ USB_DEVICE(USB_VID_WIDEVIEW,		USB_PID_AVERMEDIA_DVBT_USB_WARM) },

While here, please properly indent this table, and respect the 80-columns limit,
e. g.:

static struct usb_device_id dibusb_dib3000mb_table [] = {
	[0] = { USB_DEVICE(USB_VID_WIDEVIEW
			   USB_PID_AVERMEDIA_DVBT_USB_COLD)
	},
	[1]  =	{ USB_DEVICE(USB_VID_WIDEVIEW,
			     USB_PID_AVERMEDIA_DVBT_USB_WARM)
	},
	...

Err.... something went wrong with my space bar and I ended hitting send to
soon... I meant:

static struct usb_device_id dibusb_dib3000mb_table [] = {
  	[0] = { USB_DEVICE(USB_VID_WIDEVIEW
  			   USB_PID_AVERMEDIA_DVBT_USB_COLD)
  	},
  	[1] = { USB_DEVICE(USB_VID_WIDEVIEW,
  			   USB_PID_AVERMEDIA_DVBT_USB_WARM)
  	},
	...
};

maybe static const too

and

maybe

#define DIB_DEVICE(vid, pid)	\
	{ USB_DEVICE(USB_VID_ ## vid, USB_PID_ ## pid) }

so maybe

static const struct usb_device_id dibusb_dib3000mb_table[] = {
	[0] = DIB_DEVICE(WIDEVIEW, AVERMEDIA_DVBT_USB_COLD),
	[1] = DIB_DEVICE(WIDEVIEW, AVERMEDIA_DVBT_USB_WARM),
	...
};

though I _really_ doubt the value of the specific indexing.

I think this isn't really worth changing at all.

I agree. For the drivers that I maintain, I try to keep the vendor and device ids in numerical order. As this table does not require a special order, adding a new one in the middle would require redoing all of then after that point. That would be pointless work!

Larry



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