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| author | Alexander Sverdlin <alexander.sverdlin@nokia.com> | 2016-09-02 13:20:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-02 15:03:35 +0200 |
| commit | 46e36683f433528bfb7e5754ca5c5c86c204c40a (patch) | |
| tree | 21d6c4a885ea8fb7c7ee64ed7f77b845281e5980 /drivers/tty/serial/serial_core.c | |
| parent | 8f975fe49dba5d15a828f34ad8ec3dc8beb60ca0 (diff) | |
| download | linux-stable-46e36683f433528bfb7e5754ca5c5c86c204c40a.tar.gz linux-stable-46e36683f433528bfb7e5754ca5c5c86c204c40a.tar.bz2 linux-stable-46e36683f433528bfb7e5754ca5c5c86c204c40a.zip | |
serial: earlycon: Extend earlycon command line option to support 64-bit addresses
earlycon implementation used "unsigned long" internally, but there are systems
(ARM with LPAE) where sizeof(unsigned long) == 4 and uart is mapped beyond 4GiB
address range.
Switch to resource_size_t internally and replace obsoleted simple_strtoul() with
kstrtoull().
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/serial_core.c')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index e183d2eff16d..240d3e7a548c 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1892,11 +1892,14 @@ uart_get_console(struct uart_port *ports, int nr, struct console *co) * console=<name>,0x<addr>,<options> * is also accepted; the returned @iotype will be UPIO_MEM. * - * Returns 0 on success or -EINVAL on failure + * Returns 0 on success, -EINVAL or -ERANGE on failure */ -int uart_parse_earlycon(char *p, unsigned char *iotype, unsigned long *addr, +int uart_parse_earlycon(char *p, unsigned char *iotype, resource_size_t *addr, char **options) { + int ret; + unsigned long long tmp; + if (strncmp(p, "mmio,", 5) == 0) { *iotype = UPIO_MEM; p += 5; @@ -1922,7 +1925,10 @@ int uart_parse_earlycon(char *p, unsigned char *iotype, unsigned long *addr, return -EINVAL; } - *addr = simple_strtoul(p, NULL, 0); + ret = kstrtoull(p, 0, &tmp); + if (ret) + return ret; + *addr = tmp; p = strchr(p, ','); if (p) p++; |