This is a note to let you know that I've just added the patch titled
serial: 8250_exar: derive nr_ports from PCI ID for Acces I/O cards
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
serial-8250_exar-derive-nr_ports-from-pci-id-for-acc.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9b96d21eaaa414a8f55ded852d83c8943225debb
Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Thu Jan 27 20:06:08 2022 +0200
serial: 8250_exar: derive nr_ports from PCI ID for Acces I/O cards
[ Upstream commit 8e4413aaf6a2e3a46e99a0718ca54c0cf8609cb2 ]
In the similar way how it's done in 8250_pericom, derive the number of
the UART ports from PCI ID for Acces I/O cards.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220127180608.71509-1-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 95d698869b40 ("serial: 8250_exar: Add support for USR298x PCI Modems")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 2d0e7c7e408dc..3d82902bfe5b9 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -596,7 +596,12 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
maxnr = pci_resource_len(pcidev, bar) >> (board->reg_shift + 3);
- nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f;
+ if (pcidev->vendor == PCI_VENDOR_ID_ACCESSIO)
+ nr_ports = BIT(((pcidev->device & 0x38) >> 3) - 1);
+ else if (board->num_ports)
+ nr_ports = board->num_ports;
+ else
+ nr_ports = pcidev->device & 0x0f;
priv = devm_kzalloc(&pcidev->dev, struct_size(priv, line, nr_ports), GFP_KERNEL);
if (!priv)
@@ -695,22 +700,6 @@ static int __maybe_unused exar_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(exar_pci_pm, exar_suspend, exar_resume);
-static const struct exar8250_board acces_com_2x = {
- .num_ports = 2,
- .setup = pci_xr17c154_setup,
-};
-
-static const struct exar8250_board acces_com_4x = {
- .num_ports = 4,
- .setup = pci_xr17c154_setup,
-};
-
-static const struct exar8250_board acces_com_8x = {
- .num_ports = 8,
- .setup = pci_xr17c154_setup,
-};
-
-
static const struct exar8250_board pbn_fastcom335_2 = {
.num_ports = 2,
.setup = pci_fastcom335_setup,
@@ -795,13 +784,13 @@ static const struct exar8250_board pbn_exar_XR17V8358 = {
}
static const struct pci_device_id exar_pci_tbl[] = {
- EXAR_DEVICE(ACCESSIO, COM_2S, acces_com_2x),
- EXAR_DEVICE(ACCESSIO, COM_4S, acces_com_4x),
- EXAR_DEVICE(ACCESSIO, COM_8S, acces_com_8x),
- EXAR_DEVICE(ACCESSIO, COM232_8, acces_com_8x),
- EXAR_DEVICE(ACCESSIO, COM_2SM, acces_com_2x),
- EXAR_DEVICE(ACCESSIO, COM_4SM, acces_com_4x),
- EXAR_DEVICE(ACCESSIO, COM_8SM, acces_com_8x),
+ EXAR_DEVICE(ACCESSIO, COM_2S, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM_4S, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM_8S, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM232_8, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM_2SM, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM_4SM, pbn_exar_XR17C15x),
+ EXAR_DEVICE(ACCESSIO, COM_8SM, pbn_exar_XR17C15x),
CONNECT_DEVICE(XR17C152, UART_2_232, pbn_connect),
CONNECT_DEVICE(XR17C154, UART_4_232, pbn_connect),
