powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.
This solves a problem observed in kexec'ed kernel where 200ms timeout is too short and bootconsole fails to initialize. Console did eventually become workable but much later into the boot process. Observed timeout was around 260ms, but I decided to make it a little bigger for more reliability. This has been tested on Power7 machine with Petitboot as a primary bootloader and PowerNV firmware. CC: <stable@vger.kernel.org> Signed-off-by: Eugene Surovegin <surovegin@google.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -341,8 +341,8 @@ void hvsilib_establish(struct hvsi_priv *pv)
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pr_devel("HVSI@%x: ... waiting handshake\n", pv->termno);
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/* Try for up to 200s */
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for (timeout = 0; timeout < 20; timeout++) {
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/* Try for up to 400ms */
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for (timeout = 0; timeout < 40; timeout++) {
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if (pv->established)
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goto established;
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if (!hvsi_get_packet(pv))
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