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| author | Carlos Bilbao <carlos.bilbao@kernel.org> | 2026-04-10 16:03:00 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-06-22 15:23:12 -0500 |
| commit | 7b6e7e975705159f0ce7915811cf10f56133fdda (patch) | |
| tree | bcedcba68885c3662b9138bdbce058b42478dd2c /drivers/misc | |
| parent | 854bd081c7680029d7886689f6bef8f740625fde (diff) | |
| download | linux-next-7b6e7e975705159f0ce7915811cf10f56133fdda.tar.gz linux-next-7b6e7e975705159f0ce7915811cf10f56133fdda.zip | |
misc: pci_endpoint_test: Remove dead BAR read before doorbell trigger
The assignment before the writel sequence is dead code (bar is
unconditionally overwritten by the re-read immediately after) so remove the
assignment entirely.
Note that the DB_BAR register is a plain value written by the endpoint
firmware; reading it carries no side effect.
Signed-off-by: Carlos Bilbao (Lambda) <carlos.bilbao@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Koichiro Den <den@valinux.co.jp>
Link: https://patch.msgid.link/20260410230300.135631-3-carlos.bilbao@kernel.org
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 64ac7c7c90af..3635741c3e7a 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -1100,7 +1100,6 @@ static int pci_endpoint_test_doorbell(struct pci_endpoint_test *test) data = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_DATA); addr = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_OFFSET); - bar = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_BAR); pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type); pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1); |