powerpc/pseries/eeh: use correct API for error log size

[ Upstream commit 9aafbfa5f57a4b75bafd3bed0191e8429c5fa618 ]

rtas-error-log-max is not the name of an RTAS function, so rtas_token()
is not the appropriate API for retrieving its value. We already have
rtas_get_error_log_max() which returns a sensible value if the property
is absent for any reason, so use that instead.

Fixes: 8d633291b4fc ("powerpc/eeh: pseries platform EEH error log retrieval")
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
[mpe: Drop no-longer possible error handling as noticed by ajd]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221118150751.469393-6-nathanl@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
index 8e40cca..e5a58a9 100644 (file)
--- a/arch/powerpc/platforms/pseries/eeh_pseries.c
+++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
@@ -848,16 +848,7 @@ static int __init eeh_pseries_init(void)
        }
 
        /* Initialize error log size */
-       eeh_error_buf_size = rtas_token("rtas-error-log-max");
-       if (eeh_error_buf_size == RTAS_UNKNOWN_SERVICE) {
-               pr_info("%s: unknown EEH error log size\n",
-                       __func__);
-               eeh_error_buf_size = 1024;
-       } else if (eeh_error_buf_size > RTAS_ERROR_LOG_MAX) {
-               pr_info("%s: EEH error log size %d exceeds the maximal %d\n",
-                       __func__, eeh_error_buf_size, RTAS_ERROR_LOG_MAX);
-               eeh_error_buf_size = RTAS_ERROR_LOG_MAX;
-       }
+       eeh_error_buf_size = rtas_get_error_log_max();
 
        /* Set EEH probe mode */
        eeh_add_flag(EEH_PROBE_MODE_DEVTREE | EEH_ENABLE_IO_FOR_LOG);