From: Mathias Nyman <mathias.nyman@linux.intel.com>
To: <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>,
Niklas Neronin <niklas.neronin@linux.intel.com>,
Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: [PATCH 11/19] xhci: check if legacy irq is available before using it as fallback
Date: Fri, 1 Dec 2023 17:06:39 +0200 [thread overview]
Message-ID: <20231201150647.1307406-12-mathias.nyman@linux.intel.com> (raw)
In-Reply-To: <20231201150647.1307406-1-mathias.nyman@linux.intel.com>
From: Niklas Neronin <niklas.neronin@linux.intel.com>
Move the error check "No MSI-X/MSI found and no IRQ in BIOS" inside
'goto legacy'. It is better to check if the IRQ interrupt is available,
before trying to add a handler. Additionally the aforementioned error
message is much more clear.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
---
drivers/usb/host/xhci-pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 95ed9404f6f8..7f2b1312e943 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -228,12 +228,12 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
return 0;
}
+legacy_irq:
if (!pdev->irq) {
xhci_err(xhci, "No msi-x/msi found and no IRQ in BIOS\n");
return -EINVAL;
}
- legacy_irq:
if (!strlen(hcd->irq_descr))
snprintf(hcd->irq_descr, sizeof(hcd->irq_descr), "%s:usb%d",
hcd->driver->description, hcd->self.busnum);
--
2.25.1
next prev parent reply other threads:[~2023-12-01 15:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-01 15:06 [PATCH 00/19] xhci features for usb-next Mathias Nyman
2023-12-01 15:06 ` [PATCH 01/19] xhci: dbc: Drop duplicate checks for dma_free_coherent() Mathias Nyman
2023-12-01 15:06 ` [PATCH 02/19] xhci: dbc: Convert to use sysfs_streq() Mathias Nyman
2023-12-01 15:06 ` [PATCH 03/19] xhci: dbc: Use sysfs_emit() to instead of scnprintf() Mathias Nyman
2023-12-01 15:06 ` [PATCH 04/19] xhci: dbc: Use ATTRIBUTE_GROUPS() Mathias Nyman
2023-12-01 15:06 ` [PATCH 05/19] xhci: dbc: Check for errors first in xhci_dbc_stop() Mathias Nyman
2023-12-01 15:06 ` [PATCH 06/19] xhci: dbc: Don't shadow error codes in store() functions Mathias Nyman
2023-12-01 15:06 ` [PATCH 07/19] xhci: dbc: Replace custom return value with proper Linux error code Mathias Nyman
2023-12-01 15:06 ` [PATCH 08/19] xhci: dbc: Use sizeof_field() where it makes sense Mathias Nyman
2023-12-01 17:31 ` David Laight
2023-12-01 19:08 ` Andy Shevchenko
2023-12-02 15:50 ` David Laight
2023-12-04 10:23 ` Mathias Nyman
2023-12-04 10:45 ` David Laight
2023-12-01 15:06 ` [PATCH 09/19] xhci: dbc: Use sizeof(*pointer) instead of sizeof(type) Mathias Nyman
2023-12-01 15:06 ` [PATCH 10/19] xhci: dbc: Add missing headers Mathias Nyman
2023-12-01 15:06 ` Mathias Nyman [this message]
2023-12-01 15:06 ` [PATCH 12/19] xhci: add handler for only one interrupt line Mathias Nyman
2023-12-01 15:06 ` [PATCH 13/19] xhci: refactor static MSI-X function Mathias Nyman
2023-12-01 15:06 ` [PATCH 14/19] xhci: refactor static MSI function Mathias Nyman
2023-12-01 15:06 ` [PATCH 15/19] xhci: change 'msix_count' to encompass MSI or MSI-X vectors Mathias Nyman
2023-12-01 15:06 ` [PATCH 16/19] xhci: rework 'xhci_try_enable_msi()' MSI and MSI-X setup code Mathias Nyman
2023-12-01 15:06 ` [PATCH 17/19] xhci: minor coding style cleanup in 'xhci_try_enable_msi()' Mathias Nyman
2023-12-01 15:06 ` [PATCH 18/19] xhci: Reconfigure endpoint 0 max packet size only during endpoint reset Mathias Nyman
2023-12-01 15:06 ` [PATCH 19/19] xhci: fix possible null pointer deref during xhci urb enqueue Mathias Nyman
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