From: Andrew Donnellan <ajd@linux.ibm.com>
To: Nathan Lynch <nathanl@linux.ibm.com>, linuxppc-dev@lists.ozlabs.org
Cc: tyreld@linux.ibm.com, nnac123@linux.ibm.com,
ldufour@linux.ibm.com, npiggin@gmail.com
Subject: Re: [PATCH 02/13] powerpc/rtasd: use correct OF API for event scan rate
Date: Tue, 22 Nov 2022 13:39:32 +1100 [thread overview]
Message-ID: <75044c47f1fa65ed1b9338022b653df0b80b8a3c.camel@linux.ibm.com> (raw)
In-Reply-To: <20221118150751.469393-3-nathanl@linux.ibm.com>
On Fri, 2022-11-18 at 09:07 -0600, Nathan Lynch wrote:
> rtas_token() should be used only for properties that are RTAS
> function
> tokens. "rtas-event-scan-rate" does not contain a function token, but
> it
> has the same size/format as token properties so reading it with
> rtas_token() happens to work.
>
> Convert to of_property_read_u32().
>
> Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Did a quick grep for the other OF device tree properties listed in R1-
7.2.6-3 of PAPR to see if we make the same mistake elsewhere, and the
only other one is rtas-error-log-max which I see you clean up later in
the series.
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
> ---
> arch/powerpc/kernel/rtasd.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/kernel/rtasd.c
> b/arch/powerpc/kernel/rtasd.c
> index 5270b450bbde..cc56ac6ba4b0 100644
> --- a/arch/powerpc/kernel/rtasd.c
> +++ b/arch/powerpc/kernel/rtasd.c
> @@ -9,6 +9,7 @@
> #include <linux/errno.h>
> #include <linux/sched.h>
> #include <linux/kernel.h>
> +#include <linux/of.h>
> #include <linux/poll.h>
> #include <linux/proc_fs.h>
> #include <linux/init.h>
> @@ -499,6 +500,8 @@ EXPORT_SYMBOL_GPL(rtas_cancel_event_scan);
>
> static int __init rtas_event_scan_init(void)
> {
> + int err;
> +
> if (!machine_is(pseries) && !machine_is(chrp))
> return 0;
>
> @@ -509,8 +512,8 @@ static int __init rtas_event_scan_init(void)
> return -ENODEV;
> }
>
> - rtas_event_scan_rate = rtas_token("rtas-event-scan-rate");
> - if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) {
> + err = of_property_read_u32(rtas.dev, "rtas-event-scan-rate",
> &rtas_event_scan_rate);
> + if (err) {
> printk(KERN_ERR "rtasd: no rtas-event-scan-rate on
> system\n");
> return -ENODEV;
> }
--
Andrew Donnellan OzLabs, ADL Canberra
ajd@linux.ibm.com IBM Australia Limited
next prev parent reply other threads:[~2022-11-22 2:40 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 15:07 [PATCH 00/13] RTAS maintenance Nathan Lynch
2022-11-18 15:07 ` [PATCH 01/13] powerpc/rtas: document rtas_call() Nathan Lynch
2022-11-22 2:46 ` Andrew Donnellan
2022-11-18 15:07 ` [PATCH 02/13] powerpc/rtasd: use correct OF API for event scan rate Nathan Lynch
2022-11-22 2:39 ` Andrew Donnellan [this message]
2022-11-18 15:07 ` [PATCH 03/13] powerpc/rtas: avoid device tree lookups in rtas_os_term() Nathan Lynch
2022-11-22 3:03 ` Andrew Donnellan
2022-11-28 18:08 ` Nathan Lynch
2022-11-28 2:29 ` Nicholas Piggin
2022-11-28 18:26 ` Nathan Lynch
2022-11-29 6:45 ` Nicholas Piggin
2022-11-29 15:37 ` Nathan Lynch
2022-11-18 15:07 ` [PATCH 04/13] powerpc/rtas: avoid scheduling " Nathan Lynch
2022-11-22 3:17 ` Andrew Donnellan
2022-11-28 2:34 ` Nicholas Piggin
2022-11-18 15:07 ` [PATCH 05/13] powerpc/pseries/eeh: use correct API for error log size Nathan Lynch
2022-11-22 3:21 ` Andrew Donnellan
2022-11-28 20:22 ` Nathan Lynch
2022-11-18 15:07 ` [PATCH 06/13] powerpc/rtas: clean up rtas_error_log_max initialization Nathan Lynch
2022-11-22 3:40 ` Andrew Donnellan
2022-11-18 15:07 ` [PATCH 07/13] powerpc/rtas: clean up includes Nathan Lynch
2022-11-22 4:45 ` Andrew Donnellan
2022-11-18 15:07 ` [PATCH 08/13] powerpc/rtas: define pr_fmt and convert printk call sites Nathan Lynch
2022-11-22 4:07 ` Andrew Donnellan
2022-11-18 15:07 ` [PATCH 09/13] powerpc/rtas: mandate RTAS syscall filtering Nathan Lynch
2022-11-22 4:20 ` Andrew Donnellan
2022-11-18 15:07 ` [PATCH 10/13] powerpc/rtas: improve function information lookups Nathan Lynch
2022-11-23 2:51 ` Andrew Donnellan
2022-11-23 19:32 ` Nick Child
2022-11-24 3:28 ` Andrew Donnellan
2022-11-28 21:19 ` Nathan Lynch
2022-11-29 0:08 ` Nathan Lynch
2022-11-29 7:23 ` Andrew Donnellan
2022-11-29 15:33 ` Nathan Lynch
2022-11-23 20:06 ` Nick Child
2022-11-28 21:57 ` Nathan Lynch
2022-11-18 15:07 ` [PATCH 11/13] powerpc/rtas: strengthen do_enter_rtas() type safety, drop inline Nathan Lynch
2022-11-23 3:23 ` Andrew Donnellan
2022-11-28 2:37 ` Nicholas Piggin
2022-11-18 15:07 ` [PATCH 12/13] powerpc/tracing: tracepoints for RTAS entry and exit Nathan Lynch
2022-11-28 2:54 ` Nicholas Piggin
2022-11-18 15:07 ` [PATCH 13/13] powerpc/rtas: place tracepoints in do_enter_rtas() Nathan Lynch
2022-11-28 3:07 ` Nicholas Piggin
2022-11-28 23:44 ` Nathan Lynch
2022-11-29 0:49 ` Michael Ellerman
2022-11-29 20:24 ` Nathan Lynch
2022-11-30 7:43 ` Michael Ellerman
2022-11-29 6:47 ` Nicholas Piggin
2022-12-08 12:40 ` [PATCH 00/13] RTAS maintenance Michael Ellerman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=75044c47f1fa65ed1b9338022b653df0b80b8a3c.camel@linux.ibm.com \
--to=ajd@linux.ibm.com \
--cc=ldufour@linux.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=nathanl@linux.ibm.com \
--cc=nnac123@linux.ibm.com \
--cc=npiggin@gmail.com \
--cc=tyreld@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).