Messages in this thread |  | | From | Michael Ellerman <> | Subject | Re: [PATCH] powerpc/udbg_hvc: retry putc on -EAGAIN | Date | Sun, 23 May 2021 20:51:09 +1000 |
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Greg KH <gregkh@linuxfoundation.org> writes: > On Fri, May 14, 2021 at 04:44:22PM -0500, Nathan Lynch wrote: >> hvterm_raw_put_chars() calls hvc_put_chars(), which may return -EAGAIN >> when the underlying hcall returns a "busy" status, but udbg_hvc_putc() >> doesn't handle this. When using xmon on a PowerVM guest, this can >> result in incomplete or garbled output when printing relatively large >> amounts of data quickly, such as when dumping the kernel log buffer. >> >> Call again on -EAGAIN. >> >> Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> >> --- >> drivers/tty/hvc/hvc_vio.c | 2 +- > > Subject line does not match up with this file name. > > Don't you want "tty" and "hvc" in there somewhere?
It's a powerpc only driver, but I guess the subject should still be "tty: hvc: ..." to match convention.
I was planning to take this via the powerpc tree, but I can drop it if you'd rather take it.
cheers
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