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Thu, 2 Jul 2020 10:31:23 +0200 (CEST) From: =?UTF-8?q?Pali=20Roh=C3=A1r?= To: Thomas Petazzoni , Lorenzo Pieralisi , Andrew Murray , Bjorn Helgaas , =?UTF-8?q?Marek=20Beh=C3=BAn?= , Remi Pommarel , Tomasz Maciej Nowak , Xogium Subject: [PATCH v3] PCI: aardvark: Don't touch PCIe registers if no card connected Date: Thu, 2 Jul 2020 10:30:36 +0200 Message-Id: <20200702083036.12230-1-pali@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200528143141.29956-1-pali@kernel.org> References: <20200528143141.29956-1-pali@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200702_043125_950358_1B6654ED X-CRM114-Status: GOOD ( 14.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org V2hlbiB0aGVyZSBpcyBubyBQQ0llIGNhcmQgY29ubmVjdGVkIGFuZCBhZHZrX3BjaWVfcmRfY29u ZigpIG9yCmFkdmtfcGNpZV93cl9jb25mKCkgaXMgY2FsbGVkIGZvciBQQ0kgYnVzIHdoaWNoIGRv ZXNuJ3QgYmVsb25nIHRvIGVtdWxhdGVkCnJvb3QgYnJpZGdlLCB0aGUgYWFyZHZhcmsgZHJpdmVy IHRocm93cyB0aGUgZm9sbG93aW5nIGVycm9yIG1lc3NhZ2U6CgogIGFkdmstcGNpZSBkMDA3MDAw MC5wY2llOiBjb25maWcgcmVhZC93cml0ZSB0aW1lZCBvdXQKCk9idmlvdXNseSBhY2Nlc3Npbmcg UENJZSByZWdpc3RlcnMgb2YgZGlzY29ubmVjdGVkIGNhcmQgaXMgbm90IHBvc3NpYmxlLgoKRXh0 ZW5kIGNoZWNrIGluIGFkdmtfcGNpZV92YWxpZF9kZXZpY2UoKSBmdW5jdGlvbiBmb3IgdmFsaWRh dGluZwphdmFpbGFiaWxpdHkgb2YgUENJZSBidXMuIElmIFBDSWUgbGluayBpcyBkb3duLCB0aGVu IHRoZSBkZXZpY2UgaXMgbWFya2VkCmFzIE5vdCBGb3VuZCBhbmQgdGhlIGRyaXZlciBkb2VzIG5v dCB0cnkgdG8gYWNjZXNzIHRoZXNlIHJlZ2lzdGVycy4KClRoaXMgaXMganVzdCBhbiBvcHRpbWl6 YXRpb24gdG8gcHJldmVudCBhY2Nlc3NpbmcgUENJZSByZWdpc3RlcnMgd2hlbiBjYXJkCmlzIGRp c2Nvbm5lY3RlZC4gVHJ5aW5nIHRvIGFjY2VzcyBQQ0llIHJlZ2lzdGVycyBvZiBkaXNjb25uZWN0 ZWQgY2FyZCBkb2VzCm5vdCBjYXVzZSBhbnkgY3Jhc2gsIGtlcm5lbCBqdXN0IG5lZWRzIHRvIHdh aXQgZm9yIGEgdGltZW91dC4gU28gaWYgY2FyZApkaXNhcHBlYXIgaW1tZWRpYXRlbHkgYWZ0ZXIg Y2hlY2tpbmcgZm9yIFBDSWUgbGluayAoYmVmb3JlIGFjY2Vzc2luZyBQQ0llCnJlZ2lzdGVycyks IGl0IGRvZXMgbm90IGNhdXNlIGFueSBwcm9ibGVtcy4KClNpZ25lZC1vZmYtYnk6IFBhbGkgUm9o w6FyIDxwYWxpQGtlcm5lbC5vcmc+CgotLS0KQ2hhbmdlcyBpbiBWMzoKKiBBZGQgY29tbWVudCB0 byB0aGUgY29kZQpDaGFuZ2VzIGluIFYyOgoqIFVwZGF0ZSBjb21taXQgbWVzc2FnZSwgbWVudGlv biB0aGF0IHRoaXMgaXMgb3B0aW1pemF0aW9uCi0tLQogZHJpdmVycy9wY2kvY29udHJvbGxlci9w Y2ktYWFyZHZhcmsuYyB8IDcgKysrKysrKwogMSBmaWxlIGNoYW5nZWQsIDcgaW5zZXJ0aW9ucygr KQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvcGNpL2NvbnRyb2xsZXIvcGNpLWFhcmR2YXJrLmMgYi9k cml2ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJkdmFyay5jCmluZGV4IDkwZmYyOTFjMjRmMC4u ZDE4ZjM4OWIzNmExIDEwMDY0NAotLS0gYS9kcml2ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJk dmFyay5jCisrKyBiL2RyaXZlcnMvcGNpL2NvbnRyb2xsZXIvcGNpLWFhcmR2YXJrLmMKQEAgLTY0 NCw2ICs2NDQsMTMgQEAgc3RhdGljIGJvb2wgYWR2a19wY2llX3ZhbGlkX2RldmljZShzdHJ1Y3Qg YWR2a19wY2llICpwY2llLCBzdHJ1Y3QgcGNpX2J1cyAqYnVzLAogCWlmICgoYnVzLT5udW1iZXIg PT0gcGNpZS0+cm9vdF9idXNfbnIpICYmIFBDSV9TTE9UKGRldmZuKSAhPSAwKQogCQlyZXR1cm4g ZmFsc2U7CiAKKwkvKgorCSAqIElmIHRoZSBsaW5rIGdvZXMgZG93biBhZnRlciB3ZSBjaGVjayBm b3IgbGluay11cCwgbm90aGluZyBiYWQKKwkgKiBoYXBwZW5zIGJ1dCB0aGUgY29uZmlnIGFjY2Vz cyB0aW1lcyBvdXQuCisJICovCisJaWYgKGJ1cy0+bnVtYmVyICE9IHBjaWUtPnJvb3RfYnVzX25y ICYmICFhZHZrX3BjaWVfbGlua191cChwY2llKSkKKwkJcmV0dXJuIGZhbHNlOworCiAJcmV0dXJu IHRydWU7CiB9CiAKLS0gCjIuMjAuMQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1r ZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWls bWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK