From: Andy Shevchenko andriy.shevchenko@linux.intel.com
stable inclusion from stable-v5.10.137 commit 297e2fd08a58d4fe79ec1632ee2404b1a1484c5a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 35b4f17231923e2f64521bdf7a2793ce2c3c74a6 ]
The loop can be refactored by using ARRAY_SIZE() instead of NULL terminator. This reduces code base and makes it easier to read and understand.
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Reviewed-by: Jiri Slaby jslaby@kernel.org Link: https://lore.kernel.org/r/20211022135147.70965-1-andriy.shevchenko@linux.int... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@huawei.com --- drivers/tty/serial/8250/8250_pci.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index bdc262b4109c..7ce755b47a3d 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -897,18 +897,16 @@ static int pci_netmos_init(struct pci_dev *dev) /* enable IO_Space bit */ #define ITE_887x_POSIO_ENABLE (1 << 31)
+/* inta_addr are the configuration addresses of the ITE */ +static const short inta_addr[] = { 0x2a0, 0x2c0, 0x220, 0x240, 0x1e0, 0x200, 0x280 }; static int pci_ite887x_init(struct pci_dev *dev) { - /* inta_addr are the configuration addresses of the ITE */ - static const short inta_addr[] = { 0x2a0, 0x2c0, 0x220, 0x240, 0x1e0, - 0x200, 0x280, 0 }; int ret, i, type; struct resource *iobase = NULL; u32 miscr, uartbar, ioport;
/* search for the base-ioport */ - i = 0; - while (inta_addr[i] && iobase == NULL) { + for (i = 0; i < ARRAY_SIZE(inta_addr); i++) { iobase = request_region(inta_addr[i], ITE_887x_IOSIZE, "ite887x"); if (iobase != NULL) { @@ -925,12 +923,10 @@ static int pci_ite887x_init(struct pci_dev *dev) break; } release_region(iobase->start, ITE_887x_IOSIZE); - iobase = NULL; } - i++; }
- if (!inta_addr[i]) { + if (i == ARRAY_SIZE(inta_addr)) { dev_err(&dev->dev, "ite887x: could not find iobase\n"); return -ENODEV; }