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powerpc/pseries/pci: Fix misleading VF limit error message

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When the number of requested VFs exceeds MAX_VFS_FOR_MAP_PE, the
message prints that limit but labels it "Configurable VFs". Report
the configurable VF limit and the PE mapping limit with separate
error messages.

Suggested-by: Christophe Leroy <chleroy@kernel.org>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Reviewed-by: Christophe Leroy <chleroy@kernel.org>
[Maddy: Fixed Christophe's reviewed by tag]
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260813063731.399598-1-yijiangshan@kylinos.cn
This commit is contained in:
Jiangshan Yi 2026-08-13 14:37:31 +08:00 committed by Madhavan Srinivasan
parent 449f60f99f
commit b1824233b1
1 changed files with 8 additions and 5 deletions
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13
arch/powerpc/platforms/pseries/pci.c
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@ -132,11 +132,14 @@ static int pseries_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs)
/* First integer stores max config */
max_config_vfs = of_read_number(&max_vfs[0], 1);
if (max_config_vfs < num_vfs || num_vfs > MAX_VFS_FOR_MAP_PE) {
dev_err(&pdev->dev,
"Num VFs %x > %x Configurable VFs\n",
num_vfs, (num_vfs > MAX_VFS_FOR_MAP_PE) ?
MAX_VFS_FOR_MAP_PE : max_config_vfs);
if (max_config_vfs < num_vfs) {
dev_err(&pdev->dev, "Num VFs %x > %x Configurable VFs\n",
num_vfs, max_config_vfs);
return -EINVAL;
}
if (num_vfs > MAX_VFS_FOR_MAP_PE) {
dev_err(&pdev->dev, "Num VFs %x > %x PE mapping limit\n",
num_vfs, MAX_VFS_FOR_MAP_PE);
return -EINVAL;
}