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 15/19] xhci: change 'msix_count' to encompass MSI or MSI-X vectors
Date: Fri, 1 Dec 2023 17:06:43 +0200 [thread overview]
Message-ID: <20231201150647.1307406-16-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>
Instead of variable 'msix_count' containing the number of MSI-X vectors,
now it can contains MSI or MSI-X vector amount. Because both interrupt
methods allow several vectors. Thus, 'msix_count' is renamed to 'nvecs'.
Additionally, instead of storing the maximum possible vector amount,
now it stores the amount of successfully allocated vectors, or negative
integer on allocation failure.
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 | 14 +++++++-------
drivers/usb/host/xhci.h | 4 ++--
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index dbec0a315566..2307164a1e81 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -142,12 +142,12 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
* - num_online_cpus: maximum MSI-X vectors per CPUs core.
* Add additional 1 vector to ensure always available interrupt.
*/
- xhci->msix_count = min(num_online_cpus() + 1,
- HCS_MAX_INTRS(xhci->hcs_params1));
+ xhci->nvecs = min(num_online_cpus() + 1,
+ HCS_MAX_INTRS(xhci->hcs_params1));
- ret = pci_alloc_irq_vectors(pdev, xhci->msix_count, xhci->msix_count,
- PCI_IRQ_MSIX);
- if (ret < 0) {
+ xhci->nvecs = pci_alloc_irq_vectors(pdev, xhci->nvecs, xhci->nvecs,
+ PCI_IRQ_MSIX);
+ if (xhci->nvecs < 0) {
xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Failed to enable MSI-X");
goto setup_msi;
}
@@ -166,8 +166,8 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
setup_msi:
/* TODO: Check with MSI Soc for sysdev */
- ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
- if (ret < 0) {
+ xhci->nvecs = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
+ if (xhci->nvecs < 0) {
xhci_dbg_trace(xhci, trace_xhci_dbg_init, "failed to allocate MSI entry");
goto legacy_irq;
}
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 3ea5c092bba7..b166f47e379f 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1760,8 +1760,8 @@ struct xhci_hcd {
int page_size;
/* Valid values are 12 to 20, inclusive */
int page_shift;
- /* msi-x vectors */
- int msix_count;
+ /* MSI-X/MSI vectors */
+ int nvecs;
/* optional clocks */
struct clk *clk;
struct clk *reg_clk;
--
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 ` [PATCH 11/19] xhci: check if legacy irq is available before using it as fallback Mathias Nyman
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 ` Mathias Nyman [this message]
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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