[PATCH] serial: jsm: Use named initializers for struct pci_device_id

["Uwe Kleine-König (The Capable Hub)" <u.kleine-koenig@baylibre.com>]

Initializing structures using list initializers is harder to read than
using named initializers. Seeing the member name is more ideomatic and
easier to understand.

Use named initializers for the driver's pci_device_id array. While at it
also drop an explicit zero in the terminating array entry.

There are no changes to the compiled result of the array; verified with
builds for x86 and arm64.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
---
Hello,

this is a preparing change for making struct pci_device_id::driver_data an
anonymous union (similar to
https://lore.kernel.org/all/cover.1776579304.git.u.kleine-koenig@baylibre.com/).
This requires named initializers for .driver_data. But even without that
this is a nice cleanup making the array better readable.

Having said that I didn't find where .driver_data is used, so unless I
missed something the assignments can just go away???

For earlier patches of this type against other drivers I got the
feedback to use PCI_DEVICE_DATA() but I don't like that as it mixes
hardware properties (.vendor and .device) with driver specific software
properties (.driver_data) and thus I prefer the explicit listing
(involving more repetition) over the shorter variant (being more opaque
and harder to read).

Best regards
Uwe

 drivers/tty/serial/jsm/jsm_driver.c | 75 +++++++++++++++++++++--------
 1 file changed, 56 insertions(+), 19 deletions(-)

diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index 4b73e51f83fb..422cac8d8d71 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -296,25 +296,62 @@ static void jsm_remove_one(struct pci_dev *pdev)
 }
 
 static const struct pci_device_id jsm_pci_tbl[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_4), 0, 0, 6 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422), 0, 0, 7 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422_485), 0, 0, 8 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2_422_485), 0, 0, 9 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8), 0, 0, 10 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4), 0, 0, 11 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4RJ45), 0, 0, 12 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8RJ45), 0, 0, 13 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4), 0, 0, 14 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4_422), 0, 0, 15 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8), 0, 0, 16 },
-	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8_422), 0, 0, 17 },
-	{ 0, }
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9),
+		.driver_data = 0,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI),
+		.driver_data = 1,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45),
+		.driver_data = 2,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI),
+		.driver_data = 3,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM),
+		.driver_data = 4,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8),
+		.driver_data = 5,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_4),
+		.driver_data = 6,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422),
+		.driver_data = 7,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422_485),
+		.driver_data = 8,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2_422_485),
+		.driver_data = 9,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8),
+		.driver_data = 10,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4),
+		.driver_data = 11,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4RJ45),
+		.driver_data = 12,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8RJ45),
+		.driver_data = 13,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4),
+		.driver_data = 14,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4_422),
+		.driver_data = 15,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8),
+		.driver_data = 16,
+	}, {
+		PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8_422),
+		.driver_data = 17,
+	},
+	{ }
 };
 MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
 

base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731
-- 
2.47.3