mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 03:04:07 +07:00
d4f79cb872
Testing randconfig builds found an instance of a VLA that was
missed when determining that we have removed them all:
arch/arm/plat-orion/mpp.c: In function 'orion_mpp_conf':
arch/arm/plat-orion/mpp.c:31:2: error: ISO C90 forbids variable length array 'mpp_ctrl' [-Werror=vla]
This one is fairly straightforward: we know what all three
callers are, and the maximum length is not very long.
Fixes: 68664695ae57 ("Makefile: Globally enable VLA warning")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
|
|
* arch/arm/plat-orion/mpp.c
|
|
*
|
|
* MPP functions for Marvell orion SoCs
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mbus.h>
|
|
#include <linux/io.h>
|
|
#include <linux/gpio.h>
|
|
#include <plat/orion-gpio.h>
|
|
#include <plat/mpp.h>
|
|
|
|
/* Address of the ith MPP control register */
|
|
static __init void __iomem *mpp_ctrl_addr(unsigned int i,
|
|
void __iomem *dev_bus)
|
|
{
|
|
return dev_bus + (i) * 4;
|
|
}
|
|
|
|
|
|
void __init orion_mpp_conf(unsigned int *mpp_list, unsigned int variant_mask,
|
|
unsigned int mpp_max, void __iomem *dev_bus)
|
|
{
|
|
unsigned int mpp_nr_regs = (1 + mpp_max/8);
|
|
u32 mpp_ctrl[8];
|
|
int i;
|
|
|
|
printk(KERN_DEBUG "initial MPP regs:");
|
|
if (mpp_nr_regs > ARRAY_SIZE(mpp_ctrl)) {
|
|
printk(KERN_ERR "orion_mpp_conf: invalid mpp_max\n");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < mpp_nr_regs; i++) {
|
|
mpp_ctrl[i] = readl(mpp_ctrl_addr(i, dev_bus));
|
|
printk(" %08x", mpp_ctrl[i]);
|
|
}
|
|
printk("\n");
|
|
|
|
for ( ; *mpp_list; mpp_list++) {
|
|
unsigned int num = MPP_NUM(*mpp_list);
|
|
unsigned int sel = MPP_SEL(*mpp_list);
|
|
int shift, gpio_mode;
|
|
|
|
if (num > mpp_max) {
|
|
printk(KERN_ERR "orion_mpp_conf: invalid MPP "
|
|
"number (%u)\n", num);
|
|
continue;
|
|
}
|
|
if (variant_mask && !(*mpp_list & variant_mask)) {
|
|
printk(KERN_WARNING
|
|
"orion_mpp_conf: requested MPP%u config "
|
|
"unavailable on this hardware\n", num);
|
|
continue;
|
|
}
|
|
|
|
shift = (num & 7) << 2;
|
|
mpp_ctrl[num / 8] &= ~(0xf << shift);
|
|
mpp_ctrl[num / 8] |= sel << shift;
|
|
|
|
gpio_mode = 0;
|
|
if (*mpp_list & MPP_INPUT_MASK)
|
|
gpio_mode |= GPIO_INPUT_OK;
|
|
if (*mpp_list & MPP_OUTPUT_MASK)
|
|
gpio_mode |= GPIO_OUTPUT_OK;
|
|
|
|
orion_gpio_set_valid(num, gpio_mode);
|
|
}
|
|
|
|
printk(KERN_DEBUG " final MPP regs:");
|
|
for (i = 0; i < mpp_nr_regs; i++) {
|
|
writel(mpp_ctrl[i], mpp_ctrl_addr(i, dev_bus));
|
|
printk(" %08x", mpp_ctrl[i]);
|
|
}
|
|
printk("\n");
|
|
}
|