Patch "powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data()" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data()

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     powerpc-xive-add-missing-iounmap-in-error-path-in-xi.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 323a44a342bb4121eb89f06c9531b6cd98d54fb0
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date:   Mon Oct 17 11:23:33 2022 +0800

    powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data()
    
    [ Upstream commit 8b49670f3bb3f10cd4d5a6dca17f5a31b173ecdc ]
    
    If remapping 'data->trig_page' fails, the 'data->eoi_mmio' need be unmapped
    before returning from xive_spapr_populate_irq_data().
    
    Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
    Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
    Reviewed-by: Cédric Le Goater <clg@xxxxxxxx>
    Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20221017032333.1852406-1-yangyingliang@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
index 2bf78a30238b..43bd2579d942 100644
--- a/arch/powerpc/sysdev/xive/spapr.c
+++ b/arch/powerpc/sysdev/xive/spapr.c
@@ -437,6 +437,7 @@ static int xive_spapr_populate_irq_data(u32 hw_irq, struct xive_irq_data *data)
 
 	data->trig_mmio = ioremap(data->trig_page, 1u << data->esb_shift);
 	if (!data->trig_mmio) {
+		iounmap(data->eoi_mmio);
 		pr_err("Failed to map trigger page for irq 0x%x\n", hw_irq);
 		return -ENOMEM;
 	}



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