| Message ID | 20220429135108.2781579-64-schnelle@linux.ibm.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | Kconfig: Introduce HAS_IOPORT config option | expand |
On Fri, 2022-04-29 at 15:51 +0200, Niklas Schnelle wrote: > In the future inb() and friends will not be available when compiling > with CONFIG_HAS_IOPORT=n so we must only try to access them here if > CONFIG_DEVPORT is set which depends on HAS_IOPORT. > > Co-developed-by: Arnd Bergmann <arnd@kernel.org> > Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> > --- Sorry everyone. I sent this as PATCH in error while preparing to sent the same series as RFC. Since e-mail has no remote delete and I lack a time machine let's just all pretend you only got the RFC.
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index cc296f0823bd..c1373617153f 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -402,6 +402,7 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma) return 0; } +#ifdef CONFIG_DEVPORT static ssize_t read_port(struct file *file, char __user *buf, size_t count, loff_t *ppos) { @@ -443,6 +444,7 @@ static ssize_t write_port(struct file *file, const char __user *buf, *ppos = i; return tmp-buf; } +#endif static ssize_t read_null(struct file *file, char __user *buf, size_t count, loff_t *ppos) @@ -665,12 +667,14 @@ static const struct file_operations null_fops = { .splice_write = splice_write_null, }; -static const struct file_operations __maybe_unused port_fops = { +#ifdef CONFIG_DEVPORT +static const struct file_operations port_fops = { .llseek = memory_lseek, .read = read_port, .write = write_port, .open = open_port, }; +#endif static const struct file_operations zero_fops = { .llseek = zero_lseek,
In the future inb() and friends will not be available when compiling with CONFIG_HAS_IOPORT=n so we must only try to access them here if CONFIG_DEVPORT is set which depends on HAS_IOPORT. Co-developed-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> --- drivers/char/mem.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)