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[PATCH 14/14] xhci-dbc: don't cast away const-ness in xhci_find_dbc()
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 2 Sep 2026 08:37:26 +0200
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- Cc: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>, Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 02 Sep 2026 06:37:30 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Doing so (at the return statement), besides being a bad idea anyway, is a
violation of Misra rule 11.8.
Make "xcap" have an initializer while adjusting the code anyway.
No functional change intended.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/drivers/char/xhci-dbc.c
+++ b/xen/drivers/char/xhci-dbc.c
@@ -384,16 +384,15 @@ static bool __init dbc_init_xhc(struct d
*/
static struct dbc_reg __iomem *xhci_find_dbc(struct dbc *dbc)
{
- const uint32_t __iomem *xcap;
uint32_t xcap_val;
uint32_t next;
uint32_t id = 0;
- const void __iomem *mmio = dbc->xhc_mmio;
+ void __iomem *mmio = dbc->xhc_mmio;
const uint32_t __iomem *hccp1 = mmio + 0x10;
+ uint32_t __iomem *xcap = mmio;
const uint32_t DBC_ID = 0xA;
int ttl = 48;
- xcap = mmio;
/*
* This is initially an offset to the first capability. All the offsets
* (both in HCCP1 and then next capability pointer) are dword-based.
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