linux-kernel - [PATCH 2/2] xen: make functions in xen-acpi-processor return void

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Message-Id: <20170331111948.17539-3-jgross@suse.com>
Date:   Fri, 31 Mar 2017 13:19:48 +0200
From:   Juergen Gross <jgross@...e.com>
To:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     boris.ostrovsky@...cle.com, konrad.wilk@...cle.com,
        Juergen Gross <jgross@...e.com>
Subject: [PATCH 2/2] xen: make functions in xen-acpi-processor return void

The return value of xen_copy_pct_data() is always 0 and never checked.
xen_copy_psd_data() returns always 0, too, so checking the value is
kind of pointless.

Make the functions return void.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
 drivers/xen/xen-acpi-processor.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
index 3659ed3..8f01585 100644
--- a/drivers/xen/xen-acpi-processor.c
+++ b/drivers/xen/xen-acpi-processor.c
@@ -161,8 +161,8 @@ xen_copy_pss_data(struct acpi_processor *_pr,
 	}
 	return dst_states;
 }
-static int xen_copy_psd_data(struct acpi_processor *_pr,
-			     struct xen_processor_performance *dst)
+static void xen_copy_psd_data(struct acpi_processor *_pr,
+			      struct xen_processor_performance *dst)
 {
 	struct acpi_psd_package *pdomain;
 
@@ -189,10 +189,9 @@ static int xen_copy_psd_data(struct acpi_processor *_pr,
 
 	}
 	memcpy(&(dst->domain_info), pdomain, sizeof(struct acpi_psd_package));
-	return 0;
 }
-static int xen_copy_pct_data(struct acpi_pct_register *pct,
-			     struct xen_pct_register *dst_pct)
+static void xen_copy_pct_data(struct acpi_pct_register *pct,
+			      struct xen_pct_register *dst_pct)
 {
 	/* It would be nice if you could just do 'memcpy(pct, dst_pct') but
 	 * sadly the Xen structure did not have the proper padding so the
@@ -205,7 +204,6 @@ static int xen_copy_pct_data(struct acpi_pct_register *pct,
 	dst_pct->bit_offset = pct->bit_offset;
 	dst_pct->reserved = pct->reserved;
 	dst_pct->address = pct->address;
-	return 0;
 }
 static int push_pxx_to_hypervisor(struct acpi_processor *_pr)
 {
@@ -233,8 +231,8 @@ static int push_pxx_to_hypervisor(struct acpi_processor *_pr)
 		set_xen_guest_handle(dst_perf->states, dst_states);
 		dst_perf->flags |= XEN_PX_PSS;
 	}
-	if (!xen_copy_psd_data(_pr, dst_perf))
-		dst_perf->flags |= XEN_PX_PSD;
+	xen_copy_psd_data(_pr, dst_perf);
+	dst_perf->flags |= XEN_PX_PSD;
 
 	if (dst_perf->flags != (XEN_PX_PSD | XEN_PX_PSS | XEN_PX_PCT | XEN_PX_PPC)) {
 		pr_warn("ACPI CPU%u missing some P-state data (%x), skipping\n",
-- 
2.10.2