[PATCH AUTOSEL 5.4 038/109] serial: 8250_pci: make setup_port() parameters explicitly unsigned
From: Sasha Levin <sashal@kernel.org>
Date: 2021-09-09 12:56:48
Also in:
linux-serial, lkml
Subsystem:
8250/16?50 (and clone uarts) serial driver, the rest, tty layer and serial drivers · Maintainers:
Greg Kroah-Hartman, Linus Torvalds, Jiri Slaby
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [ Upstream commit 3a96e97ab4e835078e6f27b7e1c0947814df3841 ] The bar and offset parameters to setup_port() are used in pointer math, and while it would be very difficult to get them to wrap as a negative number, just be "safe" and make them unsigned so that static checkers do not trip over them unintentionally. Cc: Jiri Slaby <jirislaby@kernel.org> Reported-by: Jordy Zomer <redacted> Link: https://lore.kernel.org/r/20210726130717.2052096-1-gregkh@linuxfoundation.org (local) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/tty/serial/8250/8250_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 43fc5b6a25d3..a2bb103f22fc 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c@@ -89,7 +89,7 @@ static void moan_device(const char *str, struct pci_dev *dev) static int setup_port(struct serial_private *priv, struct uart_8250_port *port, - int bar, int offset, int regshift) + u8 bar, unsigned int offset, int regshift) { struct pci_dev *dev = priv->dev;
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2.30.2