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| author | Nathan Lynch <nathanl@linux.ibm.com> | 2021-05-14 16:44:22 -0500 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-05-23 20:51:36 +1000 |
| commit | 027f55e87c3094270a3223f7331d033fe15a2b3f (patch) | |
| tree | 47edc7a5436d55ec6e70c78f3f6d41ea65b6d8db /drivers/mfd/cs47l92-tables.c | |
| parent | 2cec178e35baf57d307c0982fd2e53055bd1e9bb (diff) | |
tty: hvc: udbg_hvc: retry putc on -EAGAIN
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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210514214422.3019105-1-nathanl@linux.ibm.com
Diffstat (limited to 'drivers/mfd/cs47l92-tables.c')
0 files changed, 0 insertions, 0 deletions